CN212625809U - Battery cover plate and battery - Google Patents
Battery cover plate and battery Download PDFInfo
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- CN212625809U CN212625809U CN202021871682.0U CN202021871682U CN212625809U CN 212625809 U CN212625809 U CN 212625809U CN 202021871682 U CN202021871682 U CN 202021871682U CN 212625809 U CN212625809 U CN 212625809U
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- battery
- cover plate
- groove
- weight
- lightening
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses an apron and battery of battery, the apron of battery include the body, and the internal surface relative with the inside of battery of body is equipped with towards the inside concave conducting block mounting groove of body, and the at least partial structure of the conducting block of battery is located in the conducting block mounting groove. From this, through locating the conducting block in the conducting block mounting groove, guaranteeing that apron intensity, rigidity satisfy under the condition of design demand, can reduce the weight of apron, can realize the lightweight design of apron to, can reduce the conducting block and occupy the aluminum hull inner space of battery, can increase the inside effectively utilized space of casing of battery, and then can promote the energy density of battery.
Description
Technical Field
The utility model belongs to the technical field of the battery and specifically relates to a battery of apron and the apron that has this battery of battery is related to.
Background
In order to improve the energy density of the battery, a battery manufacturer performs an optimized design from various aspects such as a chemical system, a structural design, a battery size and the like, the energy density of the current main-stream battery can be about 210 plus 260wh/kg, and in the field of aluminum-shell batteries, the weight of a structural component (a shell, a cover plate and the like) accounts for about 10% of the weight of a battery core, and the weight of the cover plate accounts for about 40% of the total weight of the structural component, and is higher.
In the prior art, the weight ratio of the smooth aluminum sheet on the cover plate is the largest (more than about 60%), and the structural analysis mainly results in that the cover plate has higher weight and the energy density of the battery is reduced due to the fact that the thickness of the smooth aluminum sheet is thicker (the thicknesses of different positions are uniform). But if simple with aluminum sheet thickness attenuate, will cause apron bulk strength, rigidity can not satisfy the design demand to, just on the apron, the conducting block setting under the negative pole post is at the internal surface of apron, and the conducting block has taken up the aluminum hull inner space, leads to the inside usable space of battery case to reduce, and electric core design capacity reduces, and then leads to the energy density of battery low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a cover plate for a battery, which can reduce the weight of the cover plate and increase the energy density of the battery.
According to the utility model discloses a apron of battery includes: the battery comprises a body, wherein the inner surface of the body, which is opposite to the inside of the battery, is provided with a conductive block mounting groove which faces the inside of the body and is concave, and at least part of the structure of the conductive block of the battery is arranged in the conductive block mounting groove.
According to the utility model discloses an apron of battery through locating the conducting block mounting groove with the conducting block, under the condition that guarantees that apron intensity, rigidity satisfy the design demand, can reduce the weight of apron, can realize the lightweight design of apron to, can reduce the aluminium hull inner space that the conducting block occupy the battery, can increase the inside effective space that utilizes of casing of battery, and then can promote the energy density of battery.
In some examples of the present invention, the body is provided with a mounting hole, the mounting hole runs through the body, the mounting hole corresponds to the conductive block mounting groove.
In some examples of the invention, the inner surface is provided with at least one weight-reducing groove.
In some examples of the invention, the lightening groove comprises: and the first lightening groove is formed in at least one side of the conductive block mounting groove in the width direction of the cover plate.
In some examples of the present invention, the first lightening groove extends in a length direction of the cover plate.
In some examples of the invention, the lightening groove comprises: and the second weight reducing groove is arranged between the explosion-proof valve and the conducting block mounting groove.
In some examples of the present invention, the second lightening groove extends in a width direction of the cover plate.
In some examples of the invention, the lightening groove comprises: the body is provided with a liquid injection hole, and at least one side of the liquid injection hole is provided with a third weight-reducing groove in the width direction of the cover plate; the third lightening groove extends in the width direction of the cover plate.
In some examples of the present invention, the cover plate has a thickness D, the conductive block mounting groove and/or the depth of the weight reduction groove is H, which satisfies the relation: h is more than or equal to 0.2D and less than or equal to 0.5 Dmm.
According to the utility model discloses a battery, including the apron of foretell battery.
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
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a cover plate according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a cover plate, an explosion-proof valve, and a fill port in accordance with an embodiment of the present invention;
fig. 3 is a bottom view of a cover plate according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of the cover plate and conductive block after assembly in accordance with an embodiment of the present invention;
fig. 5 is an enlarged view at a in fig. 4.
Reference numerals:
a cover plate 10;
a body 11; a conductive block mounting groove 12; a conductive block 13; a mounting hole 14; a lower plastic 15; an upper plastic 16; a terminal 17; a pole 18; a rubber ring 19;
a lightening slot 20; a first lightening groove 21; a second lightening slot 22; a third lightening groove 23;
an explosion-proof valve 30; and a liquid injection hole 40.
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 drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A cover plate 10 of a battery according to an embodiment of the present invention is described below with reference to fig. 1 to 5, and the cover plate 10 and a case of the battery together seal a cell in the case.
As shown in fig. 1 to 5, a cover plate 10 according to an embodiment of the present invention may include: the battery comprises a body 11, wherein a conductive block installation groove 12 which is concave towards the inside of the body 11 is formed in the inner surface of the body 11 opposite to the inside of the battery, and it can also be understood that a conductive block installation groove 12 which is concave towards the inside of the body 11 is formed in the inner surface of the body 11, at least part of the structure of the conductive block 13 of the battery is arranged in the conductive block installation groove 12, and it should be noted that the conductive block 13 of the battery can be connected with the body 11 by being arranged in the conductive block installation groove 12.
Wherein, because the internal surface relative with the inside of battery at body 11 is equipped with towards body 11 inside concave conducting block mounting groove 12, conducting block 13 sets up in conducting block mounting groove 12, can make conducting block 13 at least partial structure sink into body 11 inside, compare with prior art, can make body 11 and conducting block 13 occupy the casing inner space of battery and reduce, usable space in the casing of battery has been increased, can increase the space that sets up of electric core in the casing, thereby can promote the energy density of battery. Moreover, because the conductive block mounting groove 12 is formed in the body 11, the weight of the cover plate 10 can be reduced, which is beneficial to the light-weight design of the battery, and it should be noted that, under the condition that the strength and rigidity of the cover plate 10 meet the design requirements, the specific groove size of the conductive block mounting groove 12 can be adjusted according to the size of the conductive block 13 of the battery, the depth of the mounting groove 12 can be set to 20% -50% of the thickness of the cover plate 10, but is not limited to that the depth of the mounting groove 12 is 20% -50% of the thickness of the cover plate 10. So set up and to expose highly unchangeably on guaranteeing apron 10 utmost point post 18, guarantee apron 10 utmost point post 18 and expose highly unchangeable purpose and guarantee that electric core structural design does not influence the battery module, pack hierarchical structure design, and, owing to seted up conducting block mounting groove 12 on body 11, make the material quantity of body 11 reduce, preferentially, body 11 can be the stamping workpiece, thereby can reduce the material cost of manufacturing apron 10, through simulation analysis, set up conducting block mounting groove 12 on the surface of body 11, make conducting block 13 sink into inside the body 11, can make apron 10 occupy the inner space of casing and reduce 0.5mm ~ 1mm, thereby improve battery capacity 1% ~ 2%.
From this, internal surface relative with the inside of battery through at body 11 is equipped with conducting block mounting groove 12, can be guaranteeing apron 10 intensity, rigidity satisfies under the condition of design demand, can reduce the weight of apron 10, can realize the lightweight design of apron 10, thereby can realize the lightweight design of battery, and, locate in conducting block mounting groove 12 through conducting block 13, under guaranteeing apron 10 just, under the prerequisite that negative pole post 18 exposes highly unchangeably, can reduce just, the height that conducting block 13 below negative pole post 18 protrudes apron 10, can reduce conducting block 13 and occupy the aluminum hull inner space of battery, can increase the inside effective space that utilizes of casing of battery, and then can promote the energy density of battery.
In some embodiments of the present invention, as shown in fig. 1, the body 11 may be provided with a mounting hole 14, the mounting hole 14 may extend through the body 11, it is also understood that the body 11 is provided with a mounting hole 14, the mounting hole 14 may be a through hole, the mounting hole 14 corresponds to the conductive block mounting groove 12, it should be noted that the mounting hole 14 may communicate with the conductive block mounting groove 12 to form a communicating cavity, the weight of the body 11 can be reduced, and the weight of the cover plate 10 can be further reduced, and the mounting hole 14 communicates with the conductive block mounting groove 12, the positive and negative terminals 17 and the positive and negative terminals 18 can be electrically connected, as an embodiment, the positive and negative terminals 18 can pass through the mounting hole 14 on the body 11 to connect with the positive and negative terminals 17 by riveting, and then laser welding can be performed along the edge of the positive and negative terminals 18, so set up can effectively reduce just, negative terminal 17 and just, the internal resistance of being connected between the negative terminal 18, can insulate through plastic 15 down between body 11 and the conducting block 13 and protect, body 11 with just, can insulate through last plastic 16 between the negative terminal 17 and protect, just, the contact position of the mounting hole 14 of negative terminal 18 and body 11 can realize sealing through rubber circle 19 to can improve the operational reliability who guarantees apron 10.
In some embodiments of the present invention, as shown in fig. 3, the inner surface may be provided with at least one lightening groove 20, it should be noted that the lightening groove 20 may be provided on the inner surface of the body 11 opposite to the inside of the battery, preferably, the lightening groove 20 may be plural, it should be noted that, under the condition of ensuring that the strength and the rigidity of the cover plate 10 meet the design requirements, the specific slotting size of the lightening slots 20 can be adjusted according to the product requirements, the depth of the lightening slots 20 can be set to be 20-50% of the thickness of the cover plate 10, moreover, the thickness and the weight of the local area of the body 11 can be reduced by performing the design of slotting at different positions of the body 11, so that the weight of the cover plate 10 can be reduced, the light-weight design of the cover plate 10 is realized, and the material consumption for manufacturing the body 11 can be reduced, thereby reducing the material cost for manufacturing the cover plate 10.
In some embodiments of the present invention, as shown in fig. 3, the weight-reduction groove 20 may include: the first lightening grooves 21 are formed in the width direction of the cover plate 10, the width direction of the cover plate 10 refers to the vertical direction in fig. 3, and the first lightening grooves 21 are formed in at least one side of the conductive block mounting groove 12, it should be explained that the first lightening grooves 21 may be rectangular parallelepiped grooves but are not limited to rectangular parallelepiped grooves, and the first lightening grooves 21 may be formed in both sides of the conductive block mounting groove 12 in the width direction of the cover plate 10, so that the weight of the body 11 and the thickness of a local area can be reduced, the weight of the cover plate 10 can be reduced, the light weight design of the cover plate 10 can be realized, the material consumption for manufacturing the body 11 can be reduced, and the material cost for manufacturing the cover plate 10 can be further reduced.
In some embodiments of the present invention, the first weight-reducing grooves 21 may extend in the length direction of the cover plate 10, the length direction of the cover plate 10 is the left-right direction of the cover plate 10 in fig. 3, preferably, the number of the first weight-reducing grooves 21 may be four, two sides of the two conductive block mounting grooves 12 are respectively disposed, so that the first weight-reducing grooves 21 may be disposed at the vacant positions of the body 11, the weight of the body 11 and the thickness of the local area may be further reduced, the weight of the cover plate 10 may be further reduced, and the production cost of the cover plate 10 may also be reduced.
In some embodiments of the present invention, as shown in fig. 3, the weight-reduction groove 20 may include: the second lightening groove 22 and the body 11 can be provided with an explosion-proof valve 30, it should be noted that, by providing the explosion-proof valve 30 on the body 11, the explosion-proof valve 30 can rapidly ventilate, relieve pressure and prevent explosion when the battery is out of control due to heat, thereby solving the problem of self-explosion of the battery to a certain extent. The explosion-proof valve 30 may be located inside the conducting block mounting groove 12 in the length direction of the cover plate 10, and the second weight-reducing grooves 22 may be disposed between the explosion-proof valve 30 and the conducting block mounting groove 12, it should be explained that the explosion-proof valve 30 may be disposed at a middle position of the body 11, the second weight-reducing grooves 22 may also be rectangular-parallelepiped grooves but not limited to rectangular-parallelepiped grooves, preferably, the number of the second weight-reducing grooves 22 may be three, two of the second weight-reducing grooves 22 may be disposed between one conducting block mounting groove 12 and the explosion-proof valve 30, and another second weight-reducing groove 22 may be disposed between another conducting block mounting groove 12 and the explosion-proof valve 30, so that the weight of the cover plate 10 may be further reduced, and the light-weight design.
In some embodiments of the present invention, the second weight-reducing groove 22 extends in the width direction of the cover plate 10, so that the second weight-reducing groove 22 can be effectively disposed in the free position of the body 11, and the first weight-reducing groove 21 extends in the length direction of the cover plate 10, and the second weight-reducing groove 22 extends in the width direction of the cover plate 10, so that the criss-cross grooves can be formed in the width direction and the length direction of the body 11, thereby ensuring that the strength and the rigidity of the whole body 11 meet the design requirements, further ensuring that the rigidity and the rigidity of the whole body of the cover plate 10 meet the design requirements, and improving the working reliability of the cover plate 10.
In some embodiments of the present invention, as shown in fig. 3, the weight-reduction groove 20 may include: the third lightening groove 23, the body 11 may be provided with a liquid injection hole 40, in the width direction of the cover plate 10, at least one side of the liquid injection hole 40 may be provided with the third lightening groove 23, the third lightening groove 23 extends in the width direction of the cover plate 10, it should be noted that the liquid injection hole 40 may be provided on both sides of the explosion-proof valve 30, preferably, the third lightening groove 23 may be a rectangular parallelepiped groove but is not limited to a rectangular parallelepiped groove, the third lightening groove 23 extends in the width direction of the cover plate 10, preferably, the third lightening grooves 23 may be 2, and the 2 third lightening grooves 23 are respectively provided on both sides of the liquid injection hole 40, so that on the premise that the strength and rigidity of the whole body 11 meet the design requirements, the weight of the body 11 may be further reduced, thereby further reducing the weight of the cover plate 10, and further facilitating the light weight design of the cover plate 10.
In some embodiments of the present invention, the thickness of the cover plate 10 is D, the depth of the conductive block mounting groove 12 and/or the weight reduction groove 20 is H, and the following relation is satisfied: h is not less than 0.2D and not more than 0.5Dmm, it should be noted that the depth of the conductive block installation groove 12 and/or the lightening groove 20 may be greater than or equal to 0.2 times of the thickness of the cover plate 10, and the depth of the conductive block installation groove 12 and/or the lightening groove 20 may also be less than or equal to 0.5 times of the thickness of the cover plate 10, but the depth of the conductive block installation groove 12 and/or the lightening groove 20 is not limited thereto, and on the premise of satisfying the strength and rigidity of the cover plate 10, the grooving depth of the conductive block installation groove 12 and/or the lightening groove 20 may be reasonably designed based on the external dimension of the cover plate 10, so that the grooving of the conductive block installation groove 12 and/or the lightening groove 20 may not affect the working reliability of the cover plate 10, and the deformation of.
According to the utility model discloses the battery, the battery can be electric automobile's battery, the battery includes the apron 10 of above-mentioned embodiment, through locating conducting block 13 in conducting block mounting groove 12, under the condition that guarantees apron 10 intensity, rigidity satisfies the design demand, can reduce the weight of apron 10, can realize the lightweight design of apron 10, and, can reduce the aluminum hull inner space that conducting block 13 occupy the battery, can increase the inside effective utilization space of casing of battery, and then can promote the energy density of battery.
According to the utility model discloses a battery, battery include the apron 10 of above-mentioned embodiment, through simulation analysis, adopt the apron 10 of above-mentioned embodiment, weight can reduce 5% -13% to can have certain improvement in the aspect of the battery lightweight.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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, the schematic representations of the terms used above 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 (10)
1. A cover plate (10) for a battery, comprising:
the battery comprises a body (11), wherein the inner surface, opposite to the inside of the battery, of the body (11) is provided with a conductive block installation groove (12) which faces the concave inside of the body (11), and at least part of the structure of a conductive block (13) of the battery is arranged in the conductive block installation groove (12).
2. The cap plate (10) for batteries according to claim 1, wherein the body (11) is provided with a mounting hole (14), the mounting hole (14) penetrates through the body (11), and the mounting hole (14) corresponds to the conductive block mounting groove (12).
3. The battery cover plate (10) according to claim 1, wherein the inner surface is provided with at least one weight-reducing groove (20).
4. The cap plate (10) for batteries according to claim 3, characterized in that the lightening grooves (20) comprise: and the first lightening groove (21) is formed in at least one side of the conductive block mounting groove (12) in the width direction of the cover plate (10).
5. The battery cover plate (10) according to claim 4, wherein the first weight-reduction groove (21) extends in a length direction of the cover plate (10).
6. The cap plate (10) for batteries according to claim 3, characterized in that the lightening grooves (20) comprise: and the body (11) is provided with an explosion-proof valve (30), the explosion-proof valve (30) is positioned on the inner side of the conducting block mounting groove (12) in the length direction of the cover plate (10), and the second weight reducing groove (22) is arranged between the explosion-proof valve (30) and the conducting block mounting groove (12).
7. The cap plate (10) for batteries according to claim 6, characterized in that the second lightening grooves (22) extend in the width direction of the cap plate (10).
8. The cap plate (10) for batteries according to claim 3, characterized in that the lightening grooves (20) comprise: a third lightening groove (23), wherein the body (11) is provided with an injection hole (40), and at least one side of the injection hole (40) is provided with the third lightening groove (23) in the width direction of the cover plate (10);
the third lightening groove (23) extends in the width direction of the cover plate (10).
9. The cap plate (10) for a battery according to claim 3, wherein the thickness of the cap plate (10) is D, and the depth of the conductive block installation groove (12) and/or the weight reduction groove (20) is H, satisfying the relation: h is more than or equal to 0.2D and less than or equal to 0.5 Dmm.
10. A battery, characterized in that it comprises a cover plate (10) of a battery according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021871682.0U CN212625809U (en) | 2020-08-31 | 2020-08-31 | Battery cover plate and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021871682.0U CN212625809U (en) | 2020-08-31 | 2020-08-31 | Battery cover plate and battery |
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| Publication Number | Publication Date |
|---|---|
| CN212625809U true CN212625809U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021871682.0U Active CN212625809U (en) | 2020-08-31 | 2020-08-31 | Battery cover plate and battery |
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| CN (1) | CN212625809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023240551A1 (en) * | 2022-06-16 | 2023-12-21 | 宁德时代新能源科技股份有限公司 | End cap assembly, battery cell, battery, and electric device |
-
2020
- 2020-08-31 CN CN202021871682.0U patent/CN212625809U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023240551A1 (en) * | 2022-06-16 | 2023-12-21 | 宁德时代新能源科技股份有限公司 | End cap assembly, battery cell, battery, and electric device |
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