CN212033051U - Battery cover plate and lithium ion battery - Google Patents

Abstract

The utility model provides a battery cover plate and lithium ion battery, battery cover plate include body, bellying, explosion-proof piece and refrigeration subassembly. The bellying sets up at the body, and the bellying is injectd the heat dissipation space with the body jointly, and the screening glass has been inlayed to the bellying, and its surface is formed with a plurality of louvres. The refrigeration assembly is arranged on the body and used for cooling the battery cover plate so as to cool the lithium ion battery, and the refrigeration assembly comprises a water tank, a circulating water pipe, a water pump and a temperature sensor. The water tank is arranged on the body. The circulating water pipe comprises a water inlet and a water outlet, and the circulating water pipe is arranged in the body. The water pump is located the water tank. The temperature sensor is located the one side of keeping away from the water tank of body, and temperature sensor is used for detecting the temperature of battery apron to when the temperature is higher than the default, thereby control water pump work is cooled down for the battery apron for the water in the water tank flows in the circulating water pipe. The refrigerating assembly and the protruding portion can cool the battery cover plate, and normal work of the lithium ion battery is facilitated.

Description

Battery cover plate and lithium ion battery

Technical Field

The utility model relates to a battery production technical field, in particular to battery apron and lithium ion battery.

Background

At present, lithium ion batteries have the advantages of high specific energy, high cycle times, long storage time and the like, and are widely applied to portable electronic equipment such as mobile phones, digital video cameras and portable computers, and also widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like.

The lithium cell includes battery case, battery cover board and electric core etc. wherein battery case's inside is arranged in to electric core, and battery case's upper end has the upper end opening, and battery cover board then seals the opening in battery case's upper end, and battery cover board bottom is provided with utmost point post, and utmost point post lower part is passed through the conducting strip and is connected with electric core, and outside the via hole that battery cover board was passed to the upper end extended to the battery, the realization was to outside power supply.

However, the heat of the lithium ion battery is released in the working process, when the heat is higher than a certain value, the normal work of the lithium ion battery can be affected, and even the explosion of the lithium ion battery can be caused, and the battery cover plate in the related technology does not have the functions of fire extinguishing and cooling, so that the lithium ion battery cannot be protected, and the normal work of the lithium ion battery is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery apron and lithium ion battery aims at solving and to have at current battery apron and can not protect lithium ion battery, is unfavorable for lithium ion battery's the problem of normal work.

The utility model provides a battery cover plate, it includes:

the body is flat-plate-shaped;

the projection part is arranged on the body and is arc-shaped, the projection part and the body jointly define a heat dissipation space, a protection sheet is embedded in the projection part, and a plurality of heat dissipation holes are formed in the surface of the protection sheet;

the explosion-proof sheet is positioned in the heat dissipation space, is attached to the hollow position of the body, and works when being pressed so that one side of the body, which is far away from the protruding part, is communicated with the heat dissipation space; and

refrigeration subassembly, refrigeration subassembly sets up the body and with the bellying homonymy sets up, refrigeration subassembly is used for the battery apron cools down in order to cool down lithium ion battery, refrigeration subassembly includes:

the water tank is arranged on the body and protrudes out of the body;

the circulating water pipe comprises a water inlet and a water outlet, the water inlet and the water outlet are both connected with the water tank, and the part of the circulating water pipe is positioned in the body;

the water pump is positioned in the water tank and used for controlling the water in the water tank to flow in the circulating water pipe; and

the temperature sensor is located on one side, far away from the water tank, of the body, the temperature sensor is electrically connected with the water pump, the temperature sensor is used for detecting the temperature of the battery cover plate, and when the temperature is higher than a preset value, the water pump is controlled to work so that water in the water tank flows in the circulating water pipe and cools the battery cover plate.

Above-mentioned battery cover plate, refrigeration assembly includes the water tank, circulating pipe, water pump and temperature sensor, temperature sensor is used for detecting the temperature of battery cover plate, and when the temperature was higher than the default, control water pump work was so that the water in the water tank flows in circulating pipe, at this moment, water among the circulating pipe can take out and flow back to the water tank with the heat of battery cover plate in, so can cool down for battery cover plate, and then realize carrying out the effect of cooling for lithium ion battery, be favorable to lithium ion battery's normal work. In addition, the heat dissipation space is injectd with the body to the bellying, and the screening glass has been inlayed to the bellying, and the screening glass surface is formed with the louvre, so, the heat of body can collect to the heat dissipation space and discharge from the louvre to further promote the radiating effect of battery apron, be favorable to lithium ion battery's normal work. The explosion-proof piece works when being pressed, so that the body can be communicated with the heat dissipation space far away from one side of the boss, and therefore hot gas in the lithium ion battery can flow out through the heat dissipation space and the heat dissipation holes.

Furthermore, the circulating water pipes in the body are arranged in a U shape.

Further, be provided with the fan on the water tank, with temperature sensor electric connection, the fan is used for establishing certainly the water tank is towards the air current in the water tank outside.

Further, the water tank comprises an inlet and a rotating plate, the rotating plate is hinged with the water tank, and the rotating plate can open or close the inlet under the condition of rotation.

Further, be provided with waterproof circle on the body, waterproof circle centers on the edge setting of body, waterproof circle is located the body is kept away from one side of water tank.

Further, a liquid injection hole is formed in the body and used for conveying electrolyte to the lithium ion battery.

Further, a connecting end is arranged on the body and used for being connected with a lug of a battery cell of the lithium ion battery.

Further, the height range of the protruding part relative to the surface of the body is 0.1-1.1 mm.

The utility model provides a lithium ion battery, it includes above-mentioned arbitrary battery apron and battery case. The battery case is provided with an opening, and the battery cover plate covers the opening and is fixedly connected with the battery case.

Above-mentioned lithium ion battery, refrigeration assembly includes the water tank, circulating pipe, water pump and temperature sensor, temperature sensor is used for detecting the temperature of battery apron, and when the temperature is higher than the default, control water pump work is so that the water in the water tank flows in circulating pipe, at this moment, water among the circulating pipe can take out and flow back to the water tank with the heat of battery apron in, so can cool down for the battery apron, and then realize carrying out the effect of cooling for lithium ion battery, be favorable to lithium ion battery's normal work. In addition, the heat dissipation space is limited by the protruding portion and the body, and the heat dissipation holes are formed in the protruding portion, so that heat of the body can be collected to the heat dissipation space and discharged from the heat dissipation holes, the heat dissipation effect of the battery cover plate is further improved, and normal work of the lithium ion battery is facilitated. The explosion-proof piece works when being pressed, so that the body can be communicated with the heat dissipation space far away from one side of the boss, and therefore hot gas in the lithium ion battery can flow out through the heat dissipation space and the heat dissipation holes.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic plan view of a battery cover plate according to the present invention;

fig. 2 is another schematic plan view of the battery cover plate of the present invention;

fig. 3 is a further schematic plan view of the battery cover plate of the present invention;

fig. 4 is a schematic plan view of the lithium ion battery of the present invention.

Description of the main element symbols:

lithium ion battery	10	Battery case	11	Battery cover plate	12
						Body	13	Refrigeration assembly	14	Water tank	15
Circulating water pipe	16	Water pump	17	Temperature sensor	18
						Water inlet	19	Water outlet	20	Fan blower	21
Rotating plate	22	An inlet	23	Waterproof ring	24
						Liquid injection hole	25	Connecting end	26	Raised part	27
Heat dissipation hole	28	Heat dissipation space	29

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 3, the present invention provides a battery cover plate 12, which includes a body 13, a protrusion 27, an explosion-proof plate (not shown), and a cooling assembly 14. The body 13 is flat. The protruding portion 27 is disposed on the body 13, the protruding portion 27 is arc-shaped, the protruding portion 27 and the body jointly define a heat dissipation space 29, and a plurality of heat dissipation holes 28 are formed on the surface of the protruding portion 27. The explosion-proof sheet is positioned in the heat dissipation space 29, is attached to the hollow position of the body 13, and works when being pressed so that one side of the body 13, which is far away from the protruding portion 27, is communicated with the heat dissipation space 29. The refrigeration assembly is arranged on the body 13 and on the same side as the protruding portion 27, the refrigeration assembly 14 is used for cooling the battery cover plate 12 so as to cool the lithium ion battery 10, and the refrigeration assembly 14 comprises a water tank 15, a circulating water pipe 16, a water pump 17 and a temperature sensor 18. The water tank 15 is disposed on the body 13 and protrudes from the body 13. The circulating water pipe 16 comprises a water inlet 19 and a water outlet 20, the water inlet 19 and the water outlet 20 are both connected with the water tank 15, and the part of the circulating water pipe 16 is positioned in the body 13. A water pump 17 is provided in the water tank 15, and the water pump 17 is used to control the flow of water in the water tank 15 in the circulation water pipe 16. The temperature sensor 18 is located on one side of the body 13 far away from the water tank 15, the temperature sensor 18 is electrically connected with the water pump 17, the temperature sensor 18 is used for detecting the temperature of the battery cover plate 12, and when the temperature is higher than a preset value, the water pump 17 is controlled to work so that water in the water tank 15 flows in the circulating water pipe 16 to cool the battery cover plate 12.

Above-mentioned battery cover plate 12, refrigeration assembly 14 includes water tank 15, circulating pipe 16, water pump 17 and temperature sensor 18, temperature sensor 18 is used for detecting the temperature of battery cover plate 12, and when the temperature was higher than the default, control water pump 17 work is so that the water in water tank 15 flows in circulating pipe 16, at this moment, water in circulating pipe 16 can take out and flow back to water tank 15 with the heat of battery cover plate 12, so can cool down for battery cover plate 12, and then realize the effect of cooling down for lithium ion battery 10, be favorable to lithium ion battery 10's normal work. In addition, the protruding portion 27 and the body 13 define a heat dissipation space 29, and the heat dissipation hole 28 is formed on the protruding portion 27, so that the heat of the body 13 can be collected to the heat dissipation space 29 and discharged from the heat dissipation hole 28, thereby further improving the heat dissipation effect of the battery cover plate 12, and facilitating the normal operation of the lithium ion battery 10. The explosion-proof sheet works when being pressed, so that one side of the body 13, which is far away from the protruding part 27, is communicated with the heat dissipation space 29, and thus, hot gas inside the lithium ion battery 10 can flow out through the heat dissipation space 29 and the heat dissipation hole 28.

The body 13 may be made of aluminum. The heat dissipation effect of the aluminum is good. This facilitates heat dissipation from the lithium ion battery 10. It will be appreciated that the body 13 may be made of more than just aluminium. The specific material of the body 13 may be set according to different conditions. For example, in other embodiments, the body 13 may be made of stainless steel or iron. The specific material of the body 13 is not limited herein.

Specifically, the body 13 is provided with two connecting holes (not shown), through which the circulating water pipe 16 passes to communicate with the water tank 15.

Specifically, the heat dissipation hole 28 may be at least one of a circular shape, a triangular shape, a square shape, a runway shape, or other shapes, and of course, in other embodiments, the heat dissipation hole 28 may also be other shapes, and the specific shape of the heat dissipation hole 28 may be specifically set according to different situations, which is not limited herein.

Further, the water tank 15 may be screwed, snapped, bonded, or the like with the body 13. The specific connection mode of the water tank 15 and the body 13 can be designed according to actual conditions. And are not limited herein.

Further, the circulating water pipes 16 in the body 13 are arranged in a U shape.

So set up, what circulating pipe 16 can design is longer, so, circulating pipe 16 can increase with the area of contact of body 13, and then make refrigeration that refrigeration subassembly 14 can be better.

Of course, in other embodiments, the circulating water pipe 16 may not be arranged in a U-shape. The design can be specifically designed according to different situations. And are not limited herein.

Further, a fan 21 is disposed on the water tank 15 and electrically connected to the temperature sensor 18, and the fan 21 is used for establishing an air flow from the water tank 15 to the outside of the water tank 15.

The fan 21 is operative to establish an air flow from the water tank 15 towards the outside of the water tank 15. Thus, when the fan 21 works, the heat of the water tank 15 can be taken out to dissipate heat of the water supply tank 15, and then the water in the water supply tank 15 dissipates heat, so that the temperature of the water in the water tank 15 can be reduced.

Further, the water tank 15 includes an inlet 23 and a rotating plate 22, the rotating plate 22 is hinged to the water tank 15, and the rotating plate 22 can open or close the inlet 23 when rotated.

The user can open or close the inlet 23 by rotating the plate 22. So, the user can add water in the feed tank 15 under the open-ended condition, convenient and fast promotes user experience.

Specifically, when the rotating plate 22 closes the inlet 23, the rotating plate 22 and the water tank 15 are in a fixed state, which may be realized by a snap structure or a magnetic member, for example. This prevents the rotating plate 22 from opening the inlet 23 by mistake, which is advantageous for the normal operation of the water tank 15.

In the present invention, the water tank 15 is used for storing water. In other embodiments, the tank 15 may be used to store a refrigerant or other liquid. The specific setting can be according to different situations. And are not limited herein.

Further, a waterproof ring 24 is arranged on the body 13, the waterproof ring 24 is arranged around the edge of the body 13, and the waterproof ring 24 is positioned on the side of the body 13 far away from the water tank 15.

Therefore, when the battery cover plate 12 is connected with the battery shell 11 of the lithium ion battery 10, the sealing effect is better, and external water vapor or dust is prevented from entering the battery shell 11 of the lithium ion battery 10 to cause the damage of the lithium ion battery 10.

Wherein, the waterproof ring 24 can adopt an O-shaped ring.

Further, the body 13 is provided with a liquid injection hole 25, and the liquid injection hole 25 is used for delivering electrolyte to the lithium ion battery 10.

In this way, the lithium ion battery 10 can operate normally.

The liquid injection hole 25 may be circular, square, triangular, etc. The specific shape can be designed according to actual conditions. And are not limited herein.

Further, a connecting end 26 is disposed on the body 13, and the connecting end 26 is used for connecting with a tab of a cell of the lithium ion battery 10.

Wherein, the connection mode can be welding, splicing and the like. The specific connection mode can be set according to the actual situation. And are not limited herein.

Further, the height of the protrusion 27 relative to the surface of the body 13 is in the range of 0.1 to 1.1 mm.

So set up, bellying 27 can not influence the whole thickness of battery apron, is favorable to the miniaturized production of battery apron. It is understood that the height of the protrusion 27 relative to the surface of the body 13 may not only be 0.1-1.1 mm. The specific value of the height range of the protrusion 27 relative to the surface of the body 13 can be set according to different situations. For example, in other embodiments, the height of the protrusion 27 relative to the surface of the body 13 may not only be 1mm to 1.1 mm. And are not limited herein.

Referring to fig. 4, the present invention provides a lithium ion battery 10, which includes any one of the above battery cover plate 12 and the battery case 11. The battery can 11 has an opening, and the battery lid 12 covers the opening and is fixedly connected to the battery can 11.

Above-mentioned lithium ion battery 10, refrigeration component 14 includes water tank 15, circulating pipe 16, water pump 17 and temperature sensor 18, temperature sensor 18 is used for detecting the temperature of battery apron 12, and when the temperature was higher than the default, control water pump 17 work is so that the water in the water tank 15 flows in circulating pipe 16, at this moment, water in the circulating pipe 16 can take out and flow back to water tank 15 with the heat of battery apron 12, so can cool down for battery apron 12, and then realize the effect of cooling down for lithium ion battery 10, be favorable to lithium ion battery 10's normal work. In addition, the protruding portion 27 and the body 13 define a heat dissipation space 29, and the heat dissipation hole 28 is formed on the protruding portion 27, so that the heat of the body 13 can be collected to the heat dissipation space 29 and discharged from the heat dissipation hole 28, thereby further improving the heat dissipation effect of the battery cover plate 12, and facilitating the normal operation of the lithium ion battery 10.

The battery can 11 may be made of stainless steel, iron, aluminum, or the like. And are not limited herein.

The utility model discloses in, lithium ion battery 10 during operation can produce the heat, and the heat can be transmitted to battery apron 12, and at this moment, the temperature sensor 18 of battery apron 12 can detect this temperature to when this temperature is higher than the default (for example 70 °, 80 °, 90 etc.), control refrigeration assembly 14 work is in order to lower the temperature for battery apron 12, and then lowers the temperature for lithium ion battery 10, thereby makes lithium ion battery 10's temperature reduce, is favorable to lithium ion battery 10's normal work.

Wherein, in the utility model discloses in, electric connection can be wireless connection or wired connection. The wireless connection may be an infrared connection, a bluetooth connection, etc. The concrete can be considered according to the actual situation. And are not limited herein.

In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "example," "specific example," "one example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A battery cover plate, comprising:

the body, the body is flat:

a convex part which is arranged on the body and is arc-shaped,

the heat dissipation space is defined by the convex part and the body together, and the surface of the convex part

A protection plate is embedded, and a plurality of heat dissipation holes are formed in the surface of the protection plate;

the explosion-proof piece, the explosion-proof piece is located the heat dissipation space, the explosion-proof piece subsides are established the hollow position of body, the explosion-proof piece is worked so that the body is kept away from one side of bellying with from when the pressurized: the thermal spaces are communicated; and

refrigeration subassembly, refrigeration subassembly sets up the body and with the bellying homonymy sets up, refrigeration subassembly is used for the battery apron cools down in order to cool down to reason ion battery, refrigeration subassembly includes:

the water tank is arranged on the body and protrudes out of the body;

the circulating water pipe comprises a water inlet and a water outlet, the water inlet and the water outlet are both connected with the water tank, and the part of the circulating water pipe is positioned in the body;

the water pump is positioned in the water tank and used for controlling the water in the water tank to flow in the circulating water pipe; and

the temperature sensor is located on one side, far away from the water tank, of the body, the temperature sensor is electrically connected with the water pump, the temperature sensor is used for detecting the temperature of the battery cover plate, and when the temperature is higher than a preset value, the water pump is controlled to work so that water in the water tank flows in the circulating water pipe and cools the battery cover plate.

2. The battery cover plate according to claim 1, wherein the circulating water pipes in the body are arranged in a U shape.

3. The battery cover plate according to claim 1, wherein a fan is disposed on the water tank and electrically connected to the temperature sensor, and the fan is configured to establish an air flow from the water tank toward an outside of the water tank.

4. The battery cover plate according to claim 1, wherein the water tank includes an inlet and a rotary plate, the rotary plate is hinged to the water tank, and the rotary plate can open or close the water tank when rotating

And (4) an inlet.

5. The battery cover plate according to claim 1, wherein a waterproof ring is provided on the body, the waterproof ring being provided around an edge of the body, the waterproof ring being located on a side of the body away from the water tank.

6. The battery cover plate according to claim 1, wherein the body is provided with a liquid injection hole for delivering electrolyte to the lithium ion battery.

7. The battery cover plate of claim 1, wherein the body is provided with a connecting end, and the connecting end is used for connecting with a tab of a battery cell of the lithium ion battery.

8. The battery cover plate according to claim 1, wherein the height of the protrusions with respect to the surface of the body is in the range of 0.1-1. lmm.

9. An ion management battery, comprising: the battery cover plate of any one of claims 1 to 8: and

the battery case is provided with an opening, and the battery cover plate covers the opening and is fixedly connected with the battery case.

Images