Stamping heating sheet for PACK heating

Abstract

The utility model discloses a stamping heating sheet for PACK heating, which relates to the field of battery heating sheets and comprises a plate body, the upper surface of the plate body is fixedly connected with heat preservation cotton, a heat insulation cover is integrally formed on the outer side of the heat preservation cotton, and the bottom surface of the plate body is fixedly connected with a heating wire. And the bottom surface of the plate body is fixedly connected with a liquid storage cover covering the outer side of the heating wire. Conductive liquid is injected into the liquid storage cover through the liquid injection hole, at the moment, the conductive liquid makes direct contact with the heating wire, the heating wire is controlled to heat, the conductive liquid can be driven to be heated, then heat is transmitted to the bottom face of the whole plate body through heat conductivity among substances, and an assembled battery is heated; meanwhile, heat emitted by the heating wire is blocked by the heat preservation cotton and the heat insulation cover, heat loss is avoided, the heat transfer effect between materials is adopted, the local high heat condition caused by direct heating of the battery by the heating wire is avoided, meanwhile, heat loss is avoided through the heat preservation cotton and the heat insulation cover, and heating energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery heating sheets, and particularly relates to a stamping heating sheet for PACK heating. Background Art

[0002] The power battery PACK cover plate generally refers to an important component on a single battery. The PACK process refers to the processing method of connecting several batteries in series and forming a specific shape, specific capacity, and specific voltage according to requirements. As a new type of heating element, the heating sheet is widely used in the PACK cover plate of power batteries.

[0003] In the current heating sheets, heating wires are often assembled for heating. The generated heat will be concentrated at the heating wires, and the contact area between the heating wires and the battery is limited, which easily causes local high heat on the battery surface, resulting in uneven heating. Moreover, after the heating wires emit heat, part of the heat will be transferred to the battery surface, while the other part will be neutralized by the surrounding ambient temperature, causing heat loss and increasing the heating energy consumption. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a stamping heating sheet for PACK heating to solve the above problems, as described in detail below.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A stamping heating sheet for PACK heating provided by the utility model includes a plate body. A heat-insulating cotton is fixedly connected to the upper surface of the plate body. A heat-insulating cover is integrally formed outside the heat-insulating cotton. A heating wire is fixedly connected to the bottom surface of the plate body. A liquid storage cover covering the outside of the heating wire is fixedly connected to the bottom surface of the plate body, and liquid injection holes that can be opened and closed are provided at both ends of the liquid storage cover.

[0007] When using the above stamping heating sheet for PACK heating, conductive liquid is injected into the liquid storage cover through the liquid injection holes. At this time, the conductive liquid is in direct contact with the heating wire. By controlling the heating wire to generate heat, the conductive liquid can be driven to increase in temperature. Subsequently, through the thermal conductivity between substances, the heat is transferred to the entire bottom surface of the plate body to heat the assembled battery. At the same time, the heat dissipated by the heating wire is blocked by the heat-insulating cotton and the heat-insulating cover to avoid heat loss.

[0008] Preferably, the plate body is made of high-strength alloy aluminum, and the heating wire is made of rolled copper.

[0009] Preferably, the heating wire and the liquid storage cover are both evenly distributed in a zigzag shape on the bottom surface of the plate body, and the liquid storage cover is filled with conductive liquid.

[0010] Preferably, a sealing plug is detachably connected to the liquid injection hole by a thread.

[0011] Preferably, a plurality of through grooves are formed through the plate body, and a desiccant is detachably connected to the through grooves.

[0012] Preferably, a heat collecting ring is fixedly connected to the bottom surface of the plate body, and the heating wire and the liquid storage cover are both located inside the heat collecting ring, and the bottom of the heat collecting ring is flush with the bottom end of the liquid storage cover.

[0013] Preferably, a thermostat is fixedly installed on one side of the plate body, and the thermostat is electrically connected to the heating wire.

[0014] The beneficial effects are as follows:

[0015] By injecting the conductive liquid into the liquid storage cover through the liquid injection hole, at this time, the conductive liquid is in direct contact with the heating wire. By controlling the heating wire to generate heat, the conductive liquid can be driven to rise in temperature. Subsequently, through the heat conduction between substances, the heat is transferred to the entire bottom surface of the plate body to heat the assembled battery. At the same time, the heat dissipated by the heating wire is blocked by the heat-insulating cotton and the heat-insulating cover to avoid heat loss. The heat transfer effect between substances is adopted to avoid the local high temperature caused by the direct heating of the battery by the heating wire. At the same time, the heat-insulating cotton and the heat-insulating cover also avoid heat loss and reduce the heating energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is the bottom perspective view of the present invention;

[0018] Figure 2 is the bottom sectional perspective view of the present invention.

[0019] The reference numerals are explained as follows:

[0020] 1. Plate body; 2. Heat-insulating cotton; 3. Heat-insulating cover; 4. Heating wire; 5. Liquid storage cover; 6. Heat collecting ring; 7. Through groove; 8. Desiccant; 9. Liquid injection hole; 10. Sealing plug; 11. Thermostat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope protected by the present utility model.

[0022] Refer to Figure 1 - Figure 2 As shown, the present utility model provides a stamping heating sheet for PACK heating, including a plate body 1. A heat insulation cotton 2 is fixedly connected to the upper surface of the plate body 1. A heat insulation cover 3 is integrally formed on the outer side of the heat insulation cotton 2. A heating wire 4 is fixedly connected to the bottom surface of the plate body 1. A liquid storage cover 5 covering the outer side of the heating wire 4 is fixedly connected to the bottom surface of the plate body 1. And liquid injection holes 9 that can be opened and closed are provided at both ends of the liquid storage cover 5.

[0023] As an optional implementation manner, the plate body 1 is made of high-strength alloy aluminum, and the heating wire 4 is made of rolled copper, which can make the plate body 1 have good heat conduction effect.

[0024] As an optional implementation manner, both the heating wire 4 and the liquid storage cover 5 are evenly distributed in a zigzag shape on the bottom surface of the plate body 1, and a conductive liquid is filled in the liquid storage cover 5, which can make the bottom surface of the plate body 1 emit heat more evenly and avoid local high-temperature conditions. The conductive liquid has a high specific heat value and boiling point (so that the liquid will not boil easily), and at the same time has good heat preservation performance.

[0025] Specifically, a sealing plug 10 is detachably connected to the liquid injection hole 9 through a thread. The liquid injection hole 9 can be opened by rotating the sealing plug 10, and the conductive liquid can be injected into it. After injecting an appropriate amount, the liquid injection hole 9 can be blocked by the sealing plug 10 to avoid liquid leakage.

[0026] Furthermore, a plurality of through grooves 7 are penetratedly opened on the plate body 1, and a desiccant 8 is detachably connected to the through grooves 7. After condensed water appears in a low-temperature environment, the desiccant 8 can adsorb the moisture on the upper and lower surfaces of the plate body 1.

[0027] Specifically, a heat accumulation ring 6 is fixedly connected to the bottom surface of the plate body 1, and both the heating wire 4 and the liquid storage cover 5 are located inside the heat accumulation ring 6, and the bottom of the heat accumulation ring 6 is flush with the bottom end of the liquid storage cover 5. The heat accumulation ring 6 can cooperate with the bottom surface of the plate body 1 to form a heat preservation chamber. By heating the liquid storage cover 5, the temperature in the chamber is more balanced. At the same time, the heat accumulation ring 6 can make the bottom surface of the plate body 1 more stable and improve the stability of assembly on the surface of the battery pack.

[0028] As an alternative embodiment, a thermostat 11 is fixedly installed on one side of the plate body 1. The thermostat 11 is electrically connected to the heating wire 4. The temperature of the liquid inside the liquid storage cover 5 can be controlled to rise to a suitable temperature through the thermostat 11. At the same time, the thermostat 11 can control the heating wire 4 to stop heating after heating to the specified temperature (this is the prior art and will not be elaborated here).

[0029] With the above structure, during use, the conductive liquid is injected into the liquid storage cover 5 through the liquid injection hole 9. At this time, the conductive liquid is in direct contact with the heating wire 4. By controlling the heating wire 4 to generate heat, the conductive liquid can be driven to rise in temperature. Subsequently, through the thermal conductivity between substances, the heat is transferred to the entire bottom surface of the plate body 1 to heat the assembled battery. At the same time, the heat dissipated by the heating wire 4 is blocked by the heat insulation cotton 2 and the heat insulation cover 3 to avoid heat loss.

[0030] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims described above.

Claims

1. A stamping heating sheet for PACK heating, characterized in that: The invention comprises a plate body (1), the upper surface of the plate body (1) is fixedly connected with a heat insulation cotton (2), the outer side of the heat insulation cotton (2) is integrally formed with a heat insulation cover (3), the bottom surface of the plate body (1) is fixedly connected with a heating wire (4), the bottom surface of the plate body (1) is fixedly connected with a liquid storage cover (5) covering the outer side of the heating wire (4), and both ends of the liquid storage cover (5) are provided with openable and closable liquid injection holes (9).

2. A stamping heating sheet for PACK heating according to claim 1, characterized in that: The plate body (1) is made of high-strength aluminum alloy, and the heating wire (4) is made of rolled copper.

3. A stamping heating sheet for PACK heating according to claim 1, characterized in that: The heating wire (4) and the liquid storage cover (5) are evenly distributed in a zigzag shape on the bottom surface of the plate body (1), and the liquid storage cover (5) is filled with conductive liquid.

4. The stamping heating sheet for PACK heating according to claim 1, characterized in that: A sealing plug (10) is detachably connected to the injection hole (9) via a thread.

5. The stamping heating sheet for PACK heating according to claim 1, characterized in that: The plate body (1) is provided with a plurality of through slots (7) through which a desiccant (8) is detachably connected.

6. The stamping heating sheet for PACK heating according to claim 1, characterized in that: The bottom surface of the plate body (1) is fixedly connected with a heat collecting ring (6), and the heating wire (4) and the liquid storage cover (5) are both located inside the heat collecting ring (6), and the bottom of the heat collecting ring (6) is flush with the bottom end of the liquid storage cover (5).

7. The stamping heating sheet for PACK heating according to claim 1, characterized in that: A temperature controller (11) is fixedly mounted on one side of the plate body (1), and the temperature controller (11) is electrically connected to the heating wire (4).

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