CN218919182U - Module upper cover and battery module - Google Patents

Abstract

The utility model relates to the technical field of power batteries, in particular to a module upper cover and a battery module. The module upper cover includes: the upper cover body and the flow guide window are arranged on the upper cover body and are suitable for corresponding to the upper surface of the battery cell, the flow guide window is provided with a plurality of flow guide plates which are arranged at intervals, the flow guide plates are formed by extending downwards from the upper cover body, and flow guide ports are formed between two adjacent flow guide plates or between the flow guide plates and the upper cover body; the plurality of deflectors are adapted to be arranged from low to high in a predetermined direction. The height of a plurality of guide plates is from low to high structural style of arranging for the air current pressure of every water conservancy diversion mouth below keeps unanimous basically, and the high temperature air current of leading out from every water conservancy diversion mouth is even, and it is timely to exhaust, is favorable to improving the holistic security of module.

Description

Module upper cover and battery module

Technical Field

The utility model relates to the technical field of power batteries, in particular to a module upper cover and a battery module.

Background

With the development of new energy industry, more and more new energy batteries are applied to vehicles, however, the problem of thermal runaway of new energy vehicles in the market at present frequently occurs, wherein the power battery is used as a power part of the whole vehicle, and the safety of the battery directly influences the safety of the whole vehicle. The battery module in the vehicle is assembled by a plurality of electric cores, and once one electric core is out of control, the whole module, even the whole battery pack and the whole vehicle are burnt.

However, after the thermal runaway of the battery cells exists in the battery module in the prior art, the high-temperature gas heat remains in the module and cannot be discharged in time, so that the thermal runaway of the adjacent battery cells can be further initiated, the combustion of the whole module is initiated, and great potential safety hazards exist.

Disclosure of Invention

Therefore, the utility model aims to overcome the defect that the high-temperature gas in the battery module in the prior art cannot be timely discharged when the battery module is out of control, and further provides a module upper cover capable of timely discharging the high-temperature gas and the battery module.

In order to solve the above problems, the present utility model provides a module upper cover, comprising: an upper cover body; the guide window is arranged on the upper cover body and is suitable for corresponding to the upper surface of the battery cell, the guide window is provided with a plurality of guide plates which are arranged at intervals, the guide plates are formed by extending downwards from the upper cover body, and a guide port is formed between two adjacent guide plates or between the guide plates and the upper cover body; the plurality of deflectors are adapted to be arranged from low to high in a predetermined direction.

Optionally, the plurality of baffles are adapted to be arranged from low to high in a direction away from the explosion-proof valve of the cell.

Optionally, the baffle is arranged at an angle with the upper cover body, the lower end of the baffle is close to the explosion-proof valve, and the upper end of the baffle is far away from the explosion-proof valve.

Optionally, the module upper cover further includes: the first mounting piece is fixedly arranged on the lower surface of the upper cover body along the width direction and is suitable for mounting the heat insulation plate so as to separate two adjacent electric cores.

Optionally, the first mounting piece is provided with a supporting part, the lower end of the supporting part is lower than the lower end of the first mounting piece, and the lower end of the supporting part is suitable for being abutted with the upper surface of the battery cell.

Optionally, the upper surface of electric core is provided with the busbar, and the module upper cover still includes the connecting hole, and the connecting hole sets up on the upper cover body and is suitable for setting up corresponding with the busbar.

Optionally, the module upper cover further includes: the circuit component is arranged on the upper surface of the upper cover body and is suitable for being electrically connected with the bus bar through the connecting hole.

Optionally, the module upper cover further includes: the protection rib is arranged between the flow guide window and the connecting hole and is suitable for being abutted with the upper surface of the battery cell so as to separate the explosion-proof valve and the busbar.

Optionally, the module upper cover further includes: the second mounting piece is arranged on the lower surface of the upper cover body and is suitable for being positioned above the explosion-proof valve, the second mounting piece is suitable for mounting a water pipe, and the water pipe is suitable for melting and flowing out liquid when the explosion-proof valve ejects flame so as to reduce the temperature of the battery cell.

This use novel still provides a battery module, and it includes: a battery cell; the upper end of the module shell is an open end, and the battery cell is arranged in the module shell; above-mentioned module upper cover, the module upper cover is installed at the open end of module casing.

The utility model has the following advantages:

1. through offer the water conservancy diversion window on last lid body, be convenient for in time follow the water conservancy diversion window with high temperature flue gas discharge when the electric core takes place thermal runaway, in order to reduce the gas pressure in the module and dispel the heat, and, along predetermineeing the direction, the high from low to high structural style of arranging of a plurality of water conservancy diversion boards, make every water conservancy diversion mouth exhaust air pressure even, on the one hand highly less water conservancy diversion board is for the gas that is close to high temperature flue gas eruption position is provided sufficient space from the water conservancy diversion window discharge, on the other hand highly great water conservancy diversion board plays the effect of collecting and water conservancy diversion to the gas that is far away from high temperature flue gas eruption position, accord with gaseous flow law, make the air pressure of every water conservancy diversion mouth below keep unanimous basically, the high temperature air flow of leading out from every water conservancy diversion mouth is even, in order to alleviate the heat radiation and the heat spreading that the heat convection caused of high temperature air flow to electric core body and adjacent electric core, the exhaust is timely, be favorable to improving the holistic security of module.

2. Install fixed heat insulating board through first installed part, can play the supporting role to the heat insulating board, prevent that high-speed flame from blowing the heat insulating board down to avoid influencing adjacent electric core, increase the security.

3. The protection rib plays the effect of fixed electric core, has also separated explosion-proof valve and busbar simultaneously, and when electric core takes place thermal runaway, protection rib can avoid spreading to busbar department from explosion-proof valve spun flame or high temperature flue gas, reduces the influence of flame to the busbar to reduce the damage to the circuit, prevent that high temperature from transmitting adjacent electric core from the busbar, and prevent dangerous conditions such as generating circuit fire.

4. The pipe wall of the water pipe is suitable for melting and flowing out liquid when the explosion-proof valve ejects flame so as to reduce the temperature of the battery cell, and the liquid cools the top of the battery cell and the position of the explosion-proof valve by gravity so as to prevent further spreading of thermal runaway, wherein the liquid is preferably water, and the cost of the water is low and the cooling effect is good.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic bottom view of a module top cover according to a first embodiment of the utility model;

FIG. 2 showsbase:Sub>A schematic cross-sectional view in the direction A-A of FIG. 1;

FIG. 3 illustrates an isometric view of a modular upper cover in accordance with a first embodiment of the present utility model;

FIG. 4 shows an enlarged schematic view of portion A of FIG. 3;

fig. 5 is an assembly schematic view of a battery module according to a first embodiment of the present utility model;

fig. 6 shows an exploded view of the battery module of fig. 5;

fig. 7 shows a schematic top view of the battery module of fig. 5;

FIG. 8 shows a schematic cross-sectional view in the direction B-B in FIG. 7;

FIG. 9 shows an enlarged schematic view of portion B of FIG. 8;

fig. 10 is a schematic view showing a structure of the battery module of fig. 7 after removing a protective film;

FIG. 11 shows an enlarged schematic view of portion C of FIG. 10;

FIG. 12 is a schematic view showing the assembly of the module top cover and the heat shield, water pipes and bus bars according to the first embodiment of the utility model;

FIG. 13 shows an enlarged schematic view of portion D of FIG. 12;

fig. 14 is a schematic view showing assembly of a module upper cover and a water pipe according to the first embodiment of the present utility model;

fig. 15 shows a schematic structural diagram of a flow guiding window of the module upper cover of the present embodiment using the second novel embodiment;

fig. 16 shows a schematic structural view of a flow guiding window of the module upper cover of the third embodiment.

Reference numerals illustrate:

10. a module upper cover; 11. an upper cover body; 12. a flow guide window; 13. a deflector; 14. a diversion port; 15. a connection hole; 21. a first mounting member; 22. a support part; 23. protective ribs; 24. a second mounting member; 30. a circuit assembly; 31. an FPC; 32. nickel flakes; 33. an adapter; 34. a protective film; 40. a battery cell; 41. an explosion-proof valve; 42. a busbar; 50. a heat insulating plate; 60. a water pipe; 71. a side plate; 72. end plates.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

As shown in fig. 1 to 14, the module upper cover provided in this embodiment includes: the battery cell comprises an upper cover body 11 and a flow guide window 12, wherein the flow guide window 12 is arranged on the upper cover body 11 and is suitable for corresponding to the upper surface of the battery cell 40, the flow guide window 12 is provided with a plurality of flow guide plates 13 which are arranged at intervals, the flow guide plates 13 are formed by downwards extending the upper cover body 11, and a flow guide port 14 is formed between two adjacent flow guide plates 13 or between the flow guide plates 13 and the upper cover body 11; the plurality of baffles 13 are suitably arranged in height from low to high in a predetermined direction. Wherein, the upper surface of the battery cell 40 refers to the surface along the direction of the arrow in fig. 6 and 8; the upper surface of the battery cell 40 is provided with an explosion-proof valve 41, when the battery cell is out of control, high-temperature flue gas in the battery cell is sprayed out from the explosion-proof valve 41, and the preset direction refers to a direction away from the position where the high-temperature flue gas is sprayed out on the upper cover body 11, and specifically may be a "width direction" or a "length direction" as indicated by an arrow in fig. 1, and the like.

By using the module upper cover of this embodiment, through offer the water conservancy diversion window 12 on the upper cover body 11, be convenient for in time discharge high temperature flue gas from the water conservancy diversion window 12 when electric core 40 takes place thermal runaway, in order to reduce the gas pressure in the module and dispel the heat, and, along preset direction, the high structural style that highly is arranged from low to high for every water conservancy diversion mouth 14 exhaust air current pressure is even, on the one hand highly less water conservancy diversion board 13 is for the gas that is close to high temperature flue gas eruption position is provided sufficient space from water conservancy diversion window 12 discharge, on the other hand highly great water conservancy diversion board 13 plays the effect of collecting and water conservancy diversion to the gas that is far away from high temperature flue gas eruption position, accord with the flow law of gas, make the air current pressure of every water conservancy diversion mouth 14 below keep basically unanimous, the high temperature air current that leads out from every water conservancy diversion mouth 14 is even, in order to alleviate the heat radiation and the heat spreading that the heat convection caused of high temperature air current to electric core 40 body and adjacent electric core 40, exhaust in time, be favorable to improving the holistic security of module.

It should be noted that, a guide opening is formed between two adjacent guide plates 13, a guide opening 14 is also formed between the upper cover body 11 and the guide plate 13 on the most edge, and the guide plate 13 and the guide opening 14 together form a guide window 12; the height of the baffle 13 refers to the dimension of the baffle 13 in the "up-down" direction indicated by the arrow in fig. 2, and the upper ends of the plurality of baffles 13 are flush and the lower ends are not flush, wherein the upper end refers to the end in the "up" direction indicated by the arrow in fig. 2, and the lower end refers to the end in the "down" direction indicated by the arrow in fig. 2.

In the present embodiment, the height of the plurality of deflectors 13 is adapted to be arranged from low to high in a direction away from the explosion-proof valve 41 of the cell 40. Preferably, the plurality of baffle plates 13 are arranged in sequence in the width direction of the upper cover body 11. When the cell 40 is thermally out of control, the high-pressure gas inside the cell 40 breaks through the explosion-proof valve 41 and is discharged, the pressure inside the cell 40 is released, and after the high-pressure gas is flushed out of the explosion-proof valve 41, the gas pressure is higher as the gas pressure is closer to the position of the explosion-proof valve 41, and the gas is dispersed as the gas pressure is further from the position of the explosion-proof valve 41.

In this embodiment, the baffle 13 is in a flat plate shape, and the flow guide 14 is formed between two adjacent flat plates, so that the flat plate-shaped baffle 13 is easy to process and has small resistance to gas, and the gas is conveniently and smoothly discharged.

Preferably, the height of the plurality of flow guide plates 13 sequentially arranged from low to high along the direction away from the explosion-proof valve 41 of the battery cell 40 is in an equal-difference array, and the height difference is uniform, so that the gas is favorably discharged from the flow guide ports 14 uniformly. Specifically, the distance between the lower surface of the module upper cover 10 and the upper surface of the battery cell 40 is 7mm, and correspondingly, the height difference between the adjacent two guide plates 13 is 0.5mm, so that the rationality of the structure and the uniformity of the exhaust can be ensured.

Preferably, the upper cover body 11 is composed of a long glass fiber material of flame retardant PA6+45% and above. With the increase of the proportion of long glass fibers in the material, the PA6 material of the part structure with the same size is reduced, and the generation of PA6 high-temperature hot smoke is reduced; meanwhile, as the upper cover is formed by matching and injection molding of more than 45% of long fiber materials, after the module upper cover encounters high-temperature flame, even if the PA6 material is completely volatilized at high temperature, the module upper cover can still keep the framework shape by long glass fibers, and can still play a role in protecting the flame.

In this embodiment, the baffle 13 is disposed at an angle to the upper cover body 11, the lower end of the baffle 13 is close to the explosion-proof valve 41, and the upper end of the baffle 13 is far away from the explosion-proof valve 41, i.e., the baffle 13 is inclined toward the explosion-proof valve 41, so as to guide the gas discharged from the explosion-proof valve 41. Simulation analysis shows that the guide plate 13 and the upper cover body 11 form 40+/-5 degrees, and the optimal guide effect can be achieved at the moment.

In this embodiment, the number of the electric cores 40 is plural, the electric cores 40 are placed side by side, one or more diversion windows 12 are provided on the upper cover body 11 corresponding to each electric core 40, the number of the diversion windows 12 is preferably two, the two diversion windows 12 are suitable for being located at two sides of the explosion-proof valve 41 along the width direction of the upper cover body 11, and the two diversion windows 12 are symmetrically arranged. It should be noted that, when the electric core is out of control, the high temperature gas is sprayed out from the explosion-proof valve 41, and then spreads to the periphery, along the width direction of the upper cover body 11, two diversion windows 12 are respectively arranged at two sides of the explosion-proof valve 41, so that the exhaust area can be increased, the gas can be exhausted in time, and the symmetrical arrangement of the two diversion windows 12 also accords with the characteristic that the gas is symmetrically diffused from the center of the explosion-proof valve 41 to the periphery, so that the uniformity of the air pressure in the module is ensured.

In this embodiment, the module upper cover 10 further includes: the first mounting member 21 is fixedly disposed on the lower surface of the upper cover body 11 along the width direction, the first mounting member 21 is suitable for mounting the heat insulation plate 50, the heat insulation plate 50 is used for separating two adjacent electric cells 40, wherein the width direction refers to the "width direction" of the upper cover body 11 along the arrow in fig. 1, and the lower surface refers to the surface of the upper cover body along the "lower" direction of the arrow in fig. 1. It should be noted that, the number of the electric cores 40 in the battery module is multiple, the electric cores 40 are separated by the heat insulation plate 50, so that heat transfer between the adjacent electric cores 40 can be reduced, flame and high-temperature gas sprayed out when one electric core 40 is out of control can be prevented from affecting other electric cores, the heat insulation plate 50 is installed and fixed by the first installation piece 21, the heat insulation plate 50 can be supported, the heat insulation plate 50 is prevented from being blown down by high-speed flame, the adjacent electric cores 40 are prevented from being affected, and safety is improved. Preferably, the first mounting member 21 is a supporting rib extending along the width direction of the upper cover body 11, and the supporting rib is provided with a mounting groove along the extending direction thereof, and the mounting groove is suitable for clamping the heat insulation board 50, so that the structure is simple and the stability is high.

The insulating board 50 is a high temperature resistant insulating material, and preferably an aerogel or mica sheet, to insulate the battery cell 40 when thermal runaway occurs. The upper end of the heat insulation plate 50 is higher than the upper surface of the battery cells 40, preferably by 5mm, and after the heat insulation plate 50 is assembled with the first mounting piece 21 protruding from the lower surface of the module upper cover 10, the limit that the distance between the lower surface of the module upper cover 10 and the upper surface of the battery cells 40 is 7mm is just satisfied, so that the tightness between two adjacent battery cells 40 is ensured, and water flow is prevented from flowing to the adjacent battery cells.

In this embodiment, the first mounting member 21 is provided with the supporting portion 22, the lower end of the supporting portion 22 is lower than the lower end of the first mounting member 21, the lower end of the supporting portion 22 is suitable for being abutted against the upper surface of the battery cell 40, so as to play a role in stabilizing the battery cell 40, preventing the battery cell 40 from shaking in the module, and improving safety, wherein the lower end refers to the end in the direction of the arrow in fig. 2. Preferably, the supporting portion 22 is a supporting block, and one supporting block is respectively disposed on each of two sides of the first mounting member 21, and two supporting blocks are respectively abutted against one of two adjacent electric cores 40, so that shaking of the heat insulation board 50 can be reduced, and stability can be improved.

In this embodiment, a busbar 42 is disposed on the upper surface of the battery cell 40, and the busbar 42 is electrically connected with the tab of the battery cell 40 to realize electrical connection between the battery cells; the module upper cover further comprises a connecting hole 15, wherein the connecting hole 15 is arranged on the upper cover body 11 and is suitable for being correspondingly arranged with the bus bar 42, the connecting hole 15 is a through hole on the upper cover body 11, and the connecting hole 15 can expose the bus bar 42 so that the bus bar 42 can be connected with an external circuit.

In this embodiment, the module upper cover further includes: the circuit assembly 30, the circuit assembly 30 is disposed on the upper surface of the upper cover body 11 and is suitable for being electrically connected with the busbar 42 through the connection hole 15, so as to collect the electrical signal of the battery cell 40. Specifically, the circuit assembly 30 includes an FPC31 (Flexible Printed Circuit, a flexible circuit board), a nickel plate 32, an adapter 33, where the FPC31 is electrically connected with the nickel plate 32, and the nickel plate 32 is located above the connection hole 15 and is electrically connected with the bus bar 42, so as to realize the electrical connection between the FPC31 and the bus bar 42, collect the electrical signals of the battery 40, and the adapter 33 and the FPC31 are electrically connected and are suitable for being connected with an external circuit, so as to realize the transmission of the electrical signals of the battery 40.

Preferably, the nickel plate 32 and the busbar 42 are electrically connected by spot welding or laser welding, which is suitable for a structure with a small size, good in welding connectivity and convenient to operate.

Preferably, the FPC31 is fixedly connected to the upper cover body 11 by means of bonding or riveting, which is common, simple in operation and high in connection reliability.

Preferably, a protective film 34 is adhered to the upper surface of the FPC31 to insulate and protect the FPC31 and the exposed nickel plate 32.

In this embodiment, the module upper cover further includes: the protection muscle 23, the protection muscle 23 sets up between water conservancy diversion window 12 and connecting hole 15, the protection muscle 23 is suitable for the upper surface looks butt with electric core 40, play the effect of fixed electric core 40, explosion-proof valve 41 and busbar 42 have also been separated simultaneously, when electric core 40 takes place thermal runaway, protection muscle 23 can avoid spreading busbar 42 department from explosion-proof valve 41 spun flame or high temperature flue gas, reduce the influence of flame to busbar 42, thereby reduce the damage to the circuit, prevent that the high temperature from transmitting adjacent electric core from busbar 42, and prevent the dangerous conditions such as generating circuit fire.

In this embodiment, the module upper cover further includes: the second mounting piece 24, the second mounting piece 24 sets up the lower surface of upper cover body 11 and is suitable for being located the top of explosion-proof valve 41, and the second mounting piece 24 is suitable for installing water pipe 60, and the pipe wall of water pipe 60 is suitable for melting and outflow liquid when explosion-proof valve 41 spouts flame to reduce the temperature of electric core 40, and the liquid relies on gravity to cool down electric core 40 top and explosion-proof valve 41's position, thereby prevents further spreading of thermal runaway, and wherein, the liquid is preferably water, and the cost of water is low and the cooling effect is good. Preferably, a water pipe protecting sleeve is arranged on the water pipe 60, the water pipe protecting sleeve is positioned between two adjacent electric cores 40, namely, is positioned right above the heat insulation plate 50, when one electric core 40 in the battery module is subject to thermal runaway, high-temperature flame sprayed from the explosion-proof valve 41 of the electric core 40 melts the pipe section of the water pipe 60 right above the electric core, liquid flows out from the melting position of the water pipe 60 to cool the electric core 40, and under the blocking protection of the water pipe protecting sleeve, the corresponding pipe section above the adjacent electric core 40 is not melted, so that the adjacent electric core 40 is prevented from being watered by water, and water is prevented from flowing into the electric core where the thermal runaway does not occur.

Preferably, the second mounting piece 24 is a buckle, the water pipe 60 is clamped with the upper cover body 11, the buckle structure is simple, and the clamping connection stability is high.

Example two

As shown in fig. 15, the module top cover 10 of the second embodiment is different from the first embodiment in that the shape of the baffle 13 is different, in this embodiment, the baffle 13 is configured in a V shape protruding toward the direction of the explosion-proof valve 41, and correspondingly, the flow guiding port 14 is also in a V shape, which is also beneficial to gas discharge.

Example III

As shown in fig. 16, the module top cover 10 of the third embodiment is different from the second embodiment in that the shape of the baffle 13 is different, and in this embodiment, the baffle 13 is also V-shaped, but the protruding direction is opposite to the direction of the second embodiment, but is also beneficial to gas discharge.

This use novel still provides a battery module, and it includes: the battery cell 40, the module shell and the module upper cover 10 are arranged, wherein the upper end of the module shell is an open end, and the battery cell 40 is arranged in the module shell; the module upper cover 10 is mounted at the open end of the module housing.

In this embodiment, the module housing includes two opposite side plates 71 and two opposite end plates 72, the side plates 71 and the end plates 72 are connected by laser welding or mechanical connection, and the module housing and the battery cell 40 are mounted on the module bottom plate. Preferably, the side plate 71 is also raised above the upper surface of the cell 40 by about 5mm, and in combination with the heat shield 50 raised above the upper surface of the cell 40, the flow of water is slowed down everywhere.

Preferably, the module upper cover 10 and the side plate 71 are clamped by a buckle, so that the operation is convenient and the connection is stable.

The assembly sequence of the battery module is as follows: the method comprises the steps of firstly, preliminarily pre-fixing a battery cell 40, a heat insulation plate 50 and an end plate 72 by using tools, coating structural adhesive on the side surface of the battery cell 40, mounting a side plate 71, fixing and forming the whole module by the side plate 71 and the end plate 72 in a laser welding or mechanical connection mode, and fixing and bonding the side plate 71 and the battery cell 40 in a structural adhesive mode; and then welding the bus bar 42; then, the water pipe 60 is clamped to the upper surface of the upper cover body 11, then the circuit assembly 30 is assembled to the lower surface of the upper cover body 11, and the assembly is completed by clamping the clamping buckle of the upper cover of the module with the clamping buckle of the side plate 71.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects:

1. the flow guide window 12 that the module upper cover 10 had, the structural style that a plurality of guide plates 13 of flow guide window 12 arranged from low to high along the direction of the explosion-proof valve 41 that keeps away from electric core 40 can evenly export the heat in the battery module outside the module, guarantees inside pressure equipartition, pressure uniformity, blocks thermal runaway electric core heat and spread.

2. The module upper cover 10 is composed of high-proportion long glass fiber materials, generally more than 45%, and can keep a framework structure after the upper cover burns, and continuously maintain the protection and flow guiding effects on flames.

3. The first mounting member 21 on the lower surface of the module upper cover 10 can support the heat insulation plate 50 to prevent the heat insulation plate 50 from being blown down by high pressure air flow, thereby preventing the hot air flow from flowing to the adjacent cells 40.

4. The shielding ribs 23 may protect the bus bar 42 from heat.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A modular upper cover, comprising:

an upper cover body (11);

the guide window (12) is arranged on the upper cover body (11) and is suitable for being corresponding to the upper surface of the battery cell (40), the guide window (12) is provided with a plurality of guide plates (13) which are arranged at intervals, the guide plates (13) are formed by extending downwards from the upper cover body (11), and guide ports (14) are formed between two adjacent guide plates (13) or between the guide plates (13) and the upper cover body (11);

the height of the plurality of guide plates (13) is suitable for being arranged from low to high along a preset direction.

2. A modular cover according to claim 1, wherein the height of a plurality of said deflectors (13) is adapted to be arranged from low to high in a direction away from the explosion-proof valve (41) of the cell (40).

3. The module upper cover according to claim 2, wherein the deflector (13) is disposed at an angle to the upper cover body (11), the lower end of the deflector (13) is close to the explosion-proof valve (41) and the upper end of the deflector (13) is far away from the explosion-proof valve (41).

4. A modular cover as claimed in claim 3, further comprising: the first mounting piece (21) is fixedly arranged on the lower surface of the upper cover body (11), the first mounting piece (21) is suitable for mounting a heat insulation plate (50), and the heat insulation plate (50) is suitable for separating two adjacent battery cells (40).

5. The module upper cover according to claim 4, wherein the first mounting member (21) is provided with a supporting portion (22), a lower end of the supporting portion (22) is lower than a lower end of the first mounting member (21), and a lower end of the supporting portion (22) is adapted to abut against an upper surface of the battery cell (40).

6. The module upper cover according to claim 2, characterized in that the upper surface of the battery cell (40) is provided with a busbar (42), the module upper cover further comprises a connecting hole (15), and the connecting hole (15) is provided on the upper cover body (11) and is adapted to be provided corresponding to the busbar (42).

7. The modular cover of claim 6, wherein the modular cover further comprises: -a circuit assembly (30), said circuit assembly (30) being arranged on the upper surface of said upper cover body (11) and being adapted to be electrically connected to said busbar (42) through said connection hole (15).

8. The modular cover of claim 6, wherein the modular cover further comprises: the protection rib (23), protection rib (23) set up guide window (12) with between connecting hole (15), protection rib (23) be suitable for with the upper surface looks butt of electric core (40) is in order to separate explosion-proof valve (41) with busbar (42).

9. The module cover according to any one of claims 2 to 8, further comprising: the second mounting piece (24), second mounting piece (24) set up in the lower surface of upper cover body (11) and be suitable for be located explosion-proof valve (41) top, second mounting piece (24) are suitable for installation water pipe (60), water pipe (60) are suitable for melting and outflow liquid when explosion-proof valve (41) blowout flame to reduce the temperature of electric core (40).

10. A battery module, comprising:

a battery cell (40);

the upper end of the module shell is an open end, and the battery cell (40) is placed in the module shell;

the module upper cover (10) of any of claims 1-9, the module upper cover (10) being mounted at an open end of the module housing.

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