CN215008368U - Multi-power battery heat-insulating film and battery pack using same - Google Patents

Multi-power battery heat-insulating film and battery pack using same Download PDF

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CN215008368U
CN215008368U CN202121358331.4U CN202121358331U CN215008368U CN 215008368 U CN215008368 U CN 215008368U CN 202121358331 U CN202121358331 U CN 202121358331U CN 215008368 U CN215008368 U CN 215008368U
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power
film
electrode
battery
current
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余晓军
张立
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Ningbo Konojia New Materials Co ltd
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Ningbo Konojia New Materials Co ltd
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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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Abstract

The utility model discloses a multi-power battery heat preservation film and a battery pack using the electric heat preservation film, which comprises an outer coating film, a first electrode, a high power density electric heating film, a base film, a low power density electric heating film, a second electrode and an outer coating film which are sequentially bonded; the battery pack using the electric heating heat-insulation film comprises a multi-power battery heat-insulation film, a battery pack body, a heat conduction layer, a temperature sensing probe, a control circuit and a heat-insulation shell, wherein the battery pack body and the control circuit are fixed in the heat-insulation shell, the control circuit is connected with a power line, the heat conduction layer covers the outer surface of the battery pack body, the temperature sensing probe and the multi-power battery heat-insulation film are fixed on the heat conduction layer, a second electrode of the multi-power battery heat-insulation film is electrically connected with the battery pack body and the power line through the control circuit, and a first electrode is electrically connected with the power line through the control circuit. The utility model discloses a quick even heating of battery package has both been realized to the different electric heat membrane of two kinds of power density, has played energy-conserving effect again.

Description

Multi-power battery heat-insulating film and battery pack using same
Technical Field
The utility model relates to a battery insulation structure, especially a many power battery insulation film and use battery package of electric heat insulation film.
Background
Electric power-driven equipment devices are distributed in various industries in society, and the use in low-temperature environment is not always needed, so that the need of batteries capable of adapting to the low-temperature environment is generated, and at present, common chemical batteries, such as new energy lithium batteries, have extremely low charge and discharge capacity and even are difficult to charge and discharge under the low-temperature environment below-20 ℃, so that a mode capable of guaranteeing the working capacity of the batteries at low temperature is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the deficiencies of the prior art and providing a multi-power battery heat preservation membrane that can effectively keep warm to the battery and use electric heat preservation membrane's battery package.
In order to realize the purpose, the utility model discloses a many power battery heat preservation membrane, it is including outer tectorial membrane, first electrode, high power density electric heat membrane, base film, low power density electric heat membrane, second electrode and the outer tectorial membrane that bonds in proper order, the power density of high power density electric heat membrane is more than or equal to 0.1W/cm2The power density of the low-power density electrothermal film is less than 0.1W/cm2。
In order to adapt to the heat generated by the electric heating film and ensure the insulativity, the external coating film adopts a PET adhesive tape or a PI adhesive tape or the combination of a PI film and a hot melt adhesive film.
In order to adapt to the heat generated by the electrothermal film and ensure the insulativity, the base film is made of PI or PET material.
In order to realize effective power supply of the electrothermal film, the first electrode and the second electrode are both formed by two rectangular current collecting electrodes, the current collecting electrodes are formed by silver paste silk screen printing, the two current collecting electrodes of the first electrode are silk screen printed on two sides of one side surface of the high-power-density electrothermal film, and the two silver paste current collecting electrodes of the second electrode are silk screen printed on two sides of one side surface of the low-power-density electrothermal film.
In order to improve the heating efficiency of the electrothermal film, the first electrode and the second electrode are both composed of two collecting electrodes, the collecting electrodes are formed by silver paste silk-screen printing, guide strips are distributed on the collecting electrodes, the guide strips are distributed on the collecting electrodes in a comb-tooth shape, the two collecting electrodes of the first electrode are relatively distributed on two sides of the high-power-density electrothermal film, the guide strips on the collecting electrodes are distributed in a staggered mode, the two collecting electrodes of the second electrode are relatively distributed on two sides of the low-power-density electrothermal film, and the guide strips on the collecting electrodes are distributed in a staggered mode.
The utility model discloses an use battery package of electric heat preservation membrane, including many power battery heat preservation membrane, battery package body, heat-conducting layer, temperature-sensing probe, control circuit and heat preservation casing, battery package body and control circuit fix in the heat preservation casing, the last power cord that is connected with of control circuit, the power cord passes heat preservation casing and stretches out from its inside, battery package body side is equipped with utmost point ear, be fixed with battery charge and discharge electrode post on the heat preservation casing, utmost point ear and battery charge and discharge utmost point post electrical connection, the heat-conducting layer covers at this external surface of battery package, temperature-sensing probe and many power battery heat preservation membrane are fixed on the heat-conducting layer, and the second electrode of many power battery heat preservation membrane is through control circuit and battery package body, power cord difference electrical connection, and first electrode passes through control circuit and power cord electrical connection.
The utility model discloses the multi-power battery heat preservation membrane that obtains and the battery package that uses electric heat preservation membrane adopt the different electric heat membrane of two kinds of power density, have both ensured the operating temperature of battery, adopt the low-power density electric heat membrane simultaneously when keeping warm, have played energy-conserving effect.
Drawings
Fig. 1 is an exploded view of a multi-power battery thermal insulation film in embodiment 1 of the present invention;
FIG. 2 is a front view showing the internal structure of a battery pack using an electrothermal film according to example 1;
FIG. 3 is a plan view showing the internal structure of a battery pack using an electrothermal film according to example 1;
fig. 4 is a schematic structural view of an electrothermal film and electrodes in the embodiment 2 of the multi-power battery thermal insulation film and the battery pack using the same.
In the figure: the battery pack comprises an outer coating film 1, a first electrode 2, a high-power-density electrothermal film 3, a base film 4, a low-power-density electrothermal film 5, a second electrode 6, a battery pack body 7, a heat conduction layer 8, a temperature sensing probe 9, a control circuit 10, a heat preservation shell 11, a power line 12, a battery charging and discharging pole column 13, a flow guide strip 20, a pole lug 70 and a multi-power battery heat preservation film 100.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Example 1:
the multi-power battery thermal insulation film described in this embodiment includes, as shown in fig. 1, an outer coating film 1, a first electrode 2, a high power density electrothermal film 3, a base film 4, a low power density electrothermal film 5, a second electrode 6, and an outer coating film 1, which are sequentially bonded, where the power density of the high power density electrothermal film 3 is greater than or equal to 0.1W/cm2The power density of the low-power density electrothermal film 5 is less than 0.1W/cm2In this embodiment, the power density of the high power density electrothermal film 3 is 0.9W/cm2The power density of the low-power density electrothermal film 5 is 0.09W/cm2。
In order to adapt to the heat generated by the electrothermal film and ensure the insulativity, the outer coating film 1 adopts a PI adhesive tape.
In order to adapt to the heat generated by the electrothermal film and ensure the insulativity, the base film 4 is made of PI material.
In order to realize effective power supply of the electrothermal film, as shown in fig. 1, the first electrode 2 and the second electrode 6 are both composed of two rectangular current collecting electrodes, the current collecting electrodes are formed by silver paste silk-screen printing, the two current collecting electrodes of the first electrode 2 are silk-screen printed on two sides of one side surface of the high-power-density electrothermal film 3, and the two silver paste current collecting electrodes of the second electrode 6 are silk-screen printed on two sides of one side surface of the low-power-density electrothermal film 5.
The battery pack using the electrothermal insulation film described in this embodiment, as shown in fig. 2, includes a multi-power battery insulation film 100, a battery pack body 7, a heat conduction layer 8, a temperature sensing probe 9, a control circuit 10 and an insulation casing 11, the battery pack body 7 and the control circuit 10 are fixed in the insulation casing 11, the control circuit 10 is connected with a power line 12, the power line 12 passes through the insulation casing 11 and extends out from the inside thereof, a tab 70 is disposed on a side surface of the battery pack body 7, as shown in fig. 3, a battery charging/discharging pole 13 is fixed on the insulation casing 11, the tab 70 is electrically connected with the battery charging/discharging pole 13, the heat conduction layer 8 covers an outer surface of the battery pack body 7, the temperature sensing probe 9 and the multi-power battery insulation film 100 are fixed on the heat conduction layer 8, and a second electrode 6 of the multi-power battery insulation film passes through the control circuit 10 and the battery pack body 7, The power supply lines 12 are electrically connected to each other, and the first electrode 2 is electrically connected to the power supply lines 12 through the control circuit 10.
In the actual working process, the battery pack is in a low-temperature environment below zero (can reach-40 ℃), when the battery pack is just started, the temperature of the battery pack is lower (less than 10 ℃), at the moment, the temperature sensing probe 9 attached to the outside of the battery pack detects low temperature, the control circuit 10 controls to switch on the power line 12 and the high-power-density electrothermal film 3, an external power supply supplies power to the high-power-density electrothermal film 3 through the power line 12 to heat the battery pack body 7 at high power density, when the temperature sensing probe 9 detects that the surface temperature of the battery pack body 7 is higher than 10 ℃, the control circuit 10 cuts off the power supply to the high-power-density electrothermal film 3, meanwhile, the low-power-density electrothermal film 5 is communicated with the power line 12, the external power supply supplies power to the low-power-density electrothermal film 5 to heat the battery pack body 7 continuously, the heating speed is prevented from being too fast, and when the temperature reaches 20 ℃, the control circuit 10 controls the low-power-density electrothermal film 5 to preserve heat of the battery pack body 7, the temperature of the battery pack body 7 is within the range of 20-30 ℃, at the moment, if the connection between the power line 12 and an external power supply is cut off, the control circuit 10 automatically switches to the battery pack body 7 to supply power to the low-power density electrothermal film 5, and in the process, the heat preservation shell 11 plays a role in heat preservation and protection for all parts.
The multi-power battery heat preservation film and the battery pack using the same provided by the embodiment adopt two electric heating films with different power densities, so that the working temperature of the battery is guaranteed, and meanwhile, the low-power-density electric heating film 5 is adopted during heat preservation, so that the energy-saving effect is achieved.
Example 2:
different from embodiment 1, the multi-power battery thermal insulation film described in this embodiment adopts a PET tape as the outer coating film 1 in order to adapt to heat generated by the electrothermal film and ensure insulation.
In this embodiment, unlike embodiment 1, the power density of the high power density electrothermal film 3 is 0.5W/cm2The power density of the low-power density electrothermal film 5 is 0.01W/cm2
In order to adapt to the heat generated by the electrothermal film and ensure the insulativity, the base film 4 is made of a PET material.
In order to improve the heating efficiency of the electrothermal film, as shown in fig. 4, the first electrode 2 and the second electrode 6 (not shown in the figure) are both composed of two current collecting electrodes, the current collecting electrodes are formed by silver paste silk-screen printing, the current guiding strips 20 are distributed on the current collecting electrodes in a comb-tooth shape, the two current collecting electrodes of the first electrode 2 are distributed on two sides of the high-power-density electrothermal film 3 relatively, the current guiding strips 20 on the current collecting electrodes are distributed in a staggered manner, the two current collecting electrodes of the second electrode 6 are distributed on two sides of the low-power-density electrothermal film 5 (not shown in the figure) relatively, and the current guiding strips 20 on the current collecting electrodes are distributed in a staggered manner.
In the actual working process, the diversion strips 20 increase the contact area between the electrode and the heating film, and reduce the resistance of the electrode, thereby reducing the loss of power on the electrode and improving the working efficiency of the heating film.
Example 3:
different from embodiment 2, the multi-power battery thermal insulation film described in this embodiment adopts a combination of a PI film and a hot melt adhesive film for the outer coating film 1 in this embodiment in order to adapt to heat generated by an electrothermal film and ensure insulation.
In this embodiment, unlike embodiment 2, the power density of the high power density electrothermal film 3 is 0.1W/cm2Low power density electric heatingThe power density of the film 5 was 0.05W/cm2
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.

Claims (6)

1. A multi-power battery thermal insulation film is characterized by comprising an outer coating film (1), a first electrode (2), a high-power-density electrothermal film (3), a base film (4), a low-power-density electrothermal film (5), a second electrode (6) and the outer coating film (1) which are sequentially bonded, wherein the power density of the high-power-density electrothermal film (3) is more than or equal to 0.1W/cm2The power density of the low-power density electrothermal film (5) is less than 0.1W/cm2。
2. The multi-power battery thermal insulation film as claimed in claim 1, wherein the outer coating film (1) is a combination of PET tape, PI film and hot melt adhesive film.
3. The multi-power battery thermal insulation film according to claim 1 or 2, wherein the base film (4) is made of PI or PET material.
4. The multi-power battery thermal insulation film as claimed in claim 1 or 2, wherein the first electrode (2) and the second electrode (6) are both formed by two rectangular current collecting electrodes, the current collecting electrodes are formed by silver paste silk screen printing, the two current collecting electrodes of the first electrode (2) are silk screen printed on two sides of one side surface of the high-power-density electrothermal film (3), and the two current collecting electrodes of the second electrode (6) are silk screen printed on two sides of one side surface of the low-power-density electrothermal film (5).
5. The multi-power battery heat-insulating membrane as claimed in claim 1 or 2, wherein the first electrode (2) and the second electrode (6) are both composed of two current-collecting electrodes, the current-collecting electrodes are formed by silver paste silk-screen printing, the current-collecting electrodes are distributed with the current-guiding strips (20), the current-guiding strips (20) are distributed on the current-collecting electrodes in a comb-tooth shape, the two current-collecting electrodes of the first electrode (2) are distributed on two sides of the high-power-density electrothermal film (3) relatively, the current-guiding strips (20) on the current-collecting electrodes are distributed in a staggered manner, the two current-collecting electrodes of the second electrode (6) are distributed on two sides of the low-power-density electrothermal film (5) relatively, and the current-guiding strips (20) on the current-collecting electrodes are distributed in a staggered manner.
6. A battery pack using an electrothermal insulation film, which comprises the multi-power battery insulation film (100) in claim 1, a battery pack body (7), a heat conduction layer (8), a temperature sensing probe (9), a control circuit (10) and an insulation shell (11), and is characterized in that the battery pack body (7) and the control circuit (10) are fixed in the insulation shell (11), the control circuit (10) is connected with a power line (12), the power line (12) penetrates through the insulation shell (11) to extend out of the insulation shell, the side surface of the battery pack body (7) is provided with a tab (70), the insulation shell (11) is fixed with a battery charge and discharge electrode column (13), the tab (70) is electrically connected with the battery charge and discharge electrode column (13), the heat conduction layer (8) covers the outer surface of the battery pack body (7), the temperature sensing probe (9) and the multi-power battery insulation film (100) are fixed on the heat conduction layer (8), the second electrode (6) of the multi-power battery heat-insulating film is respectively and electrically connected with the battery pack body (7) and the power line (12) through the control circuit (10), and the first electrode (2) is electrically connected with the power line (12) through the control circuit (10).
CN202121358331.4U 2021-06-18 2021-06-18 Multi-power battery heat-insulating film and battery pack using same Active CN215008368U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121358331.4U CN215008368U (en) 2021-06-18 2021-06-18 Multi-power battery heat-insulating film and battery pack using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121358331.4U CN215008368U (en) 2021-06-18 2021-06-18 Multi-power battery heat-insulating film and battery pack using same

Publications (1)

Publication Number Publication Date
CN215008368U true CN215008368U (en) 2021-12-03

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Address after: 315500 No. 398 Binhai Avenue, Binhai New Area, Economic Development Zone, Fenghua District, Ningbo City, Zhejiang Province (self declared)

Patentee after: Ningbo konojia new materials Co.,Ltd.

Address before: 315500 No.99, binwan Road, Binhai New Area, Fenghua District, Ningbo City, Zhejiang Province

Patentee before: Ningbo konojia new materials Co.,Ltd.

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