CN219739231U - Battery device and power utilization device - Google Patents
Battery device and power utilization device Download PDFInfo
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- CN219739231U CN219739231U CN202321246235.XU CN202321246235U CN219739231U CN 219739231 U CN219739231 U CN 219739231U CN 202321246235 U CN202321246235 U CN 202321246235U CN 219739231 U CN219739231 U CN 219739231U
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- electrode terminal
- battery
- bus bars
- insulating
- battery device
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- 238000009413 insulation Methods 0.000 claims description 12
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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Abstract
The utility model discloses a battery device and an electricity utilization device, wherein the battery device comprises: the battery pack comprises at least two single batteries, wherein the single batteries comprise a first electrode terminal and a second electrode terminal which are opposite in polarity, and the first electrode terminal and the second electrode terminal are arranged on the same end face of the single batteries; bus bars, one bus bar is respectively connected with the first electrode terminal and the second electrode terminal of different single batteries, two bus bars are respectively connected with the first electrode terminal and the second electrode terminal of the same single battery, and the two bus bars are respectively connected with the first electrode terminal and the second electrode terminal of the same single batteryInsulating parts are arranged between the bus bars, and the resistivity of the insulating parts is more than 10 6 Omega cm. The utility model is characterized in that an insulating part is arranged between two buses on the same single battery, and the resistivity of the insulating part is ensured to be more than 10 6 Omega cm, thereby insulating two buses well, avoiding the connection short circuit of the first electrode terminal and the second electrode terminal of the single battery, ensuring the safety of the battery device, and improving the safety of the power utilization device.
Description
Technical Field
The present utility model relates to the field of battery technologies, and in particular, to a battery device and an electric device.
Background
With the development and progress of technology, electric vehicles are increasingly used. A battery pack is provided in an electric vehicle for storing electric energy and supplying the electric vehicle with energy. A plurality of single batteries are arranged in the battery pack and are electrically connected through a busbar. The single battery comprises a shell and a pole, wherein the shell and the pole are both made of metal, and when the busbar is connected with the positive electrode and the negative electrode of the single battery, the positive electrode and the negative electrode of the single battery are required to be in an insulating state so as to avoid short circuit.
Disclosure of Invention
In order to solve the above-mentioned drawbacks in the prior art, an object of the present utility model is to provide a battery device, which can effectively ensure electrical connection between unit cells, avoid occurrence of short circuit, and ensure safety of the battery device.
In order to solve the above-mentioned drawbacks of the prior art, a second object of the present utility model is to provide an electric device with high safety.
According to one of the purposes of the utility model, the technical scheme is as follows:
a battery device, comprising:
the battery pack comprises at least two single batteries, wherein the single batteries comprise a first electrode terminal and a second electrode terminal which are opposite in polarity, and the first electrode terminal and the second electrode terminal are arranged on the same end face of the single batteries;
bus bars, one bus bar is respectively connected with the first electrode terminal and the second electrode terminal of different single batteries, two bus bars are respectively connected with the first electrode terminal and the second electrode terminal of the same single battery, and the two bus bars are respectively connected with the first electrode terminal and the second electrode terminal of the same single batteryInsulating parts are arranged between the rows, and the resistivity of the insulating parts is more than 10 6 Ω.cm。
The battery device of the utility model is characterized in that an insulating part is arranged between two bus bars on the same single battery, and the resistivity of the insulating part is ensured to be more than 10 6 Omega cm, thereby insulating two busbar well, avoiding the first electrode terminal of battery cell self and second electrode terminal to connect the short circuit, guaranteed the security of battery device.
The technical scheme provided by the second purpose of the utility model is as follows:
an electric device comprises the battery device.
The risk of short circuit of the single battery in the battery device is reduced, and the use safety of the battery device is improved, so that the safety of the power utilization device is improved.
Drawings
Fig. 1 is a schematic view of a battery device according to an embodiment;
FIG. 2 is a schematic diagram of a cell and a bus bar;
fig. 3 is an exploded view of the battery cell and the bus bar.
Wherein the reference numerals have the following meanings:
1. a single battery; 11. a housing; 12. a pole; 2. a busbar; 21. a first confluence part; 22. and a second confluence part.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus 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.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
The present embodiment provides a battery device, referring to fig. 1, which includes a case and a plurality of unit batteries 1 disposed in the case. The unit cell 1 includes a first electrode terminal and a second electrode terminal having opposite polarities, which are provided on the same end face of the unit cell 1. The single batteries 1 are connected through the bus bars 2, specifically, one bus bar 2 is respectively connected with the first electrode terminal and the second electrode terminal of different single batteries 1, two bus bars 2 are respectively connected with the first electrode terminal and the second electrode terminal of the same single battery 1, an insulating part is arranged between the two bus bars 2, and the resistivity of the insulating part is more than 10 6 Omega cm. The battery device of the embodiment is characterized in that an insulating piece is arranged between two bus bars 2 on the same single battery 1, and the resistivity of the insulating piece is ensured to be more than 10 6 Omega cm, thereby insulating the two bus bars 2 well, avoiding the short circuit between the first electrode terminal and the second electrode terminal of the single battery 1, and ensuring the safety of the battery device.
Referring to fig. 2 and 3, the bus bar 2 includes a first bus bar portion 21 and a second bus bar portion 22, the first bus bar portion 21 of the same bus bar 2 is connected to a first electrode terminal of one unit cell 1, and the second bus bar portion 22 is connected to a second electrode terminal of the other unit cell 1, so that different unit cells 1 are electrically connected through one bus bar 2. The number of the first bus bar portion 21 and the second bus bar portion 22 of one bus bar 2 may be plural, so that a plurality of single batteries 1 can be electrically connected by one bus bar 2, and one single battery 1 is connected to two bus bars 2.
In order to avoid a short circuit between the first electrode terminal and the second electrode terminal on the single battery 1, a gap is arranged between the two busbars 2 connected on the same single battery 1, and an insulating member is arranged in the gap, so that the insulation between the two busbars 2 is realized through the insulating member, and the insulation between the first electrode terminal and the second electrode terminal on one single battery 1 is further realized.
In this embodiment, the insulating member is an insulating adhesive layer coated between two bus bars 2 on the same single battery 1, and since the insulating adhesive has fluidity before molding, the insulating adhesive can be arranged between the two bus bars 2 and can flow into gaps, thereby having better insulating effect.
The thickness of the insulating adhesive layer in this embodiment is 0.5-2mm, and the thickness refers to the thickness from one busbar 2 to another busbar 2 on the same single cell 1. The insulating adhesive layer is arranged between one busbar 2 and the other busbar 2 on the same single battery 1, so that the two busbars 2 can be better insulated, and the thickness of the insulating adhesive layer is too thin and is easy to break down by current, therefore, the thickness of the insulating adhesive layer is not less than 0.5mm. It is known that the larger the thickness of the insulating adhesive layer, the larger the insulation resistance, the more the insulation between two adjacent bus bars 2 on the same single cell 1 can be ensured, and in general, the gap between one bus bar 2 to another bus bar on the same single cell 1 is not more than 2mm, and therefore, the thickness of the insulating adhesive layer is not more than 2mm.
Further, in order to better achieve the insulation effect between the two bus bars 2 on the same single battery 1, the insulating adhesive layer of the embodiment is arranged between the two bus bars 2 on the same single battery 1 and covers the first bus bar portion 21 and/or the second bus bar portion 22, so that the surface of the first bus bar portion 21 and/or the second bus bar portion 22 on the single battery 1 is also in insulation arrangement on the basis of ensuring insulation between the two bus bars 2 on the same single battery 1, and the insulation effect between the two bus bars 2 on the same single battery 1 is further improved.
Still further, the insulating glue layer of this embodiment is established between two busbar 2 on same battery cell 1, and covers busbar 2 to on guaranteeing insulating basis between two busbar 2 on same battery cell 1, whole busbar 2's surface is insulating setting, and insulating effect between two busbar 2 on same battery cell 1 further improves, avoids battery cell 1 self first electrode terminal and second electrode terminal to connect the short circuit, has guaranteed battery device's security.
As for the unit cell 1 of the present embodiment, it includes a housing 11 and a pole 12, the pole 12 being provided protruding on the housing 11. The unit cell 1 of this embodiment may be a square cell, where the post 12 of the square cell includes a positive post and a negative post, the positive post and the negative post are disposed on the same end face of the housing 11, the negative post is a first electrode terminal, and the positive post is a second electrode terminal.
Alternatively, referring to fig. 2 and 3, the unit cell 1 of the present embodiment is a cylindrical cell, the pole 12 of the cylindrical cell is convexly disposed on the end face of the housing 11, the pole 12 is a second electrode terminal, and the end face of the housing 11 provided with the pole 12 is a first electrode terminal. Other types of batteries are not one by one example.
In addition, the embodiment also provides an electricity utilization device which comprises the battery device. The use safety of the battery device is improved due to the fact that the risk of short circuit of the single battery 1 in the battery device is reduced, and therefore the safety of the power utilization device is improved.
The technical scheme of the present utility model will be described in detail by the following examples and comparative examples.
Example 1
The embodiment provides a battery device, including a box and establish a plurality of cylinder batteries in the box, the cylinder battery includes cylindrical casing 11 and cylindrical utmost point post 12, and utmost point post 12 protruding the setting is at the terminal surface of casing 11, and utmost point post 12 is the second electrode terminal, and the terminal surface that is equipped with utmost point post 12 of casing 11 is first electrode terminal, and the polarity of first electrode terminal and second electrode terminal is opposite. The cylindrical batteries are connected through the bus bars 2, one bus bar 2 is respectively connected with the pole 12 and the shell 11 of different cylindrical batteries, two bus bars 2 are respectively connected with the pole 12 and the shell 11 of the same cylindrical battery, an insulating piece is arranged between the two bus bars 2, and the resistivity of the insulating piece is 2 x 10 9 Ω.cm。
Example 2
The embodiment provides a battery device, including a box and establish a plurality of cylinder batteries in the box, the cylinder battery includes cylindrical casing 11 and cylindrical utmost point post 12, and utmost point post 12 protruding the setting is at the terminal surface of casing 11, and utmost point post 12 is the second electrode terminal, and the terminal surface that is equipped with utmost point post 12 of casing 11 is first electrode terminal, and the polarity of first electrode terminal and second electrode terminal is opposite. The cylindrical batteries are connected through the bus bars 2, one bus bar 2 is respectively connected with the pole 12 and the shell 11 of different cylindrical batteries, two bus bars 2 are respectively connected with the pole 12 and the shell 11 of the same cylindrical battery, an insulating piece is arranged between the two bus bars 2, and the resistivity of the insulating piece is 2 x 10 8 Ω.cm。
Example 3
The embodiment provides a battery device, including a box and establish a plurality of cylinder batteries in the box, the cylinder battery includes cylindrical casing 11 and cylindrical utmost point post 12, and utmost point post 12 protruding the setting is at the terminal surface of casing 11, and utmost point post 12 is the second electrode terminal, and the terminal surface that is equipped with utmost point post 12 of casing 11 is first electrode terminal, and the polarity of first electrode terminal and second electrode terminal is opposite. The cylindrical batteries are connected through the bus bars 2, one bus bar 2 is respectively connected with the pole 12 and the shell 11 of different cylindrical batteries, two bus bars 2 are respectively connected with the pole 12 and the shell 11 of the same cylindrical battery, an insulating piece is arranged between the two bus bars 2, and the resistivity of the insulating piece is 7.8x10 8 Ω.cm。
Comparative example 1
This comparative example provides a battery device, including the box and establish a plurality of cylinder batteries in the box, the cylinder battery includes cylindrical casing 11 and cylindrical utmost point post 12, and utmost point post 12 protruding the setting is at the terminal surface of casing 11, and utmost point post 12 is the second electrode terminal, and the terminal surface that is equipped with utmost point post 12 of casing 11 is first electrode terminal, and the polarity of first electrode terminal and second electrode terminal is opposite. The cylindrical batteries are connected through the bus bars 2, one bus bar 2 is respectively connected with the pole 12 and the shell 11 of different cylindrical batteries, two bus bars 2 are respectively connected with the pole 12 and the shell 11 of the same cylindrical battery, an insulating piece is arranged between the two bus bars 2, and the resistivity of the insulating piece is 1 x 10 5 Ω.cm。
The insulation between the post 12 of the cylindrical battery itself and the case 11 in the battery device of examples 1 to 3, comparative example 1 was tested as follows: when the GB/T28046.4-2011 is adopted for testing, and the insulation resistance between the pole 12 of the cylindrical battery and the shell 11 is larger than 10MΩ, the pole 12 and the shell 11 have good insulation property.
Table 1 shows the test results of examples 1-3 and comparative example 1.
As can be seen from Table 1, the present utility model defines that the specific resistance of the insulating member between two adjacent bus bars 2 on the same single cell 1 is greater than 10 6 The two bus bars 2 can be well insulated by omega cm, the short circuit between the first electrode terminal and the second electrode terminal of the single battery 1 is avoided, and the safety of the battery device is ensured.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (9)
1. A battery device, characterized by comprising:
the battery pack comprises at least two single batteries, wherein the single batteries comprise a first electrode terminal and a second electrode terminal which are opposite in polarity, and the first electrode terminal and the second electrode terminal are arranged on the same end face of the single batteries;
the bus bars are respectively connected with the first electrode terminal and the second electrode terminal of different single batteries, the two bus bars are respectively connected with the first electrode terminal and the second electrode terminal of the same single battery, and a space between the two bus bars is provided withAn insulation member having a resistivity > 10 6 Ω.cm。
2. A battery device according to claim 1, wherein: the busbar comprises a first busbar portion and a second busbar portion, wherein the first busbar portion is connected with the first electrode terminal of one single battery, and the second busbar portion is connected with the second electrode terminal of the other single battery.
3. A battery device according to claim 1, wherein: the single battery is a cylindrical battery, the cylindrical battery comprises a shell and a pole, the pole is convexly arranged on the shell, the shell is the first electrode terminal, and the pole is the second electrode terminal.
4. A battery device according to claim 1, wherein: and a gap is arranged between the two buses on the same single battery, and the insulating piece is arranged in the gap.
5. A battery device according to claim 1, wherein: the insulating piece is an insulating adhesive layer.
6. A battery device according to claim 5, wherein: and the thickness of the insulating adhesive layer is 0.5-2mm from one busbar to the other busbar on the same single battery.
7. A battery device according to claim 2, wherein: the insulating piece is arranged between the two bus bars on the same single battery and covers the first bus bar part and/or the second bus bar part.
8. A battery device according to claim 1, wherein: the insulating piece is arranged between the two buses on the same single battery, and the insulating piece covers the buses.
9. An electrical device, characterized in that: a battery device comprising the battery device of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321246235.XU CN219739231U (en) | 2023-05-22 | 2023-05-22 | Battery device and power utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321246235.XU CN219739231U (en) | 2023-05-22 | 2023-05-22 | Battery device and power utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219739231U true CN219739231U (en) | 2023-09-22 |
Family
ID=88027513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321246235.XU Active CN219739231U (en) | 2023-05-22 | 2023-05-22 | Battery device and power utilization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219739231U (en) |
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2023
- 2023-05-22 CN CN202321246235.XU patent/CN219739231U/en active Active
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