Heating structure of energy storage battery at low temperature

Abstract

The utility model relates to the technical field of energy storage batteries, in particular to a heating structure of an energy storage battery at low temperature. The device comprises a mounting rack, a plurality of accommodating grooves for accommodating batteries are formed in the mounting rack, electric heating films are arranged in the accommodating grooves, the batteries are wound and wrapped by the electric heating films, silica gel layers are arranged on the surfaces of the two sides of each electric heating film, epoxy resin layers are arranged on the electric heating films, and the epoxy resin layers are arranged on the surfaces of the two sides of each electric heating film. The electric heating film and the silica gel layer are both located in the epoxy resin layer. The heating device has the effect of improving the heating uniformity.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries, in particular to a heating structure of energy storage batteries at low temperatures. Background Art

[0002] Energy storage batteries are devices used to store electrical energy and release it when needed. They play an important role in energy management, grid stability, renewable energy integration, and electric vehicles. Energy storage batteries are usually composed of one or more battery cells and can be expanded as needed. They store electrical energy by converting it into chemical energy, and then convert the chemical energy back into electrical energy when needed. Energy storage batteries can adopt a variety of different chemical compositions, including lithium-ion, lead-acid, sodium-sulfur, sodium-nickel-chloride, etc. Among them, lithium-ion batteries are currently the most widely used type and are widely used in electric vehicles, home energy storage systems, and commercial energy storage systems.

[0003] However, in a low temperature environment, the battery will have problems such as reduced battery capacity, increased internal resistance, and shortened battery life. Currently, energy storage batteries generally have two methods: liquid heating and installing an electric heating film on the outer shell of the energy storage battery. However, liquid heating and using an electric heating film on the outer shell of the energy storage battery have problems such as slow heating and uneven heating. Utility Model Content

[0004] In order to improve the heating uniformity, the utility model provides a heating structure for energy storage batteries at low temperatures in view of the problems of the prior art.

[0005] The utility model provides a heating structure for a low temperature energy storage battery, which adopts the following technical solution:

[0006] A heating structure for a low-temperature energy storage battery comprises a mounting frame, wherein the mounting frame is provided with a plurality of receiving slots for receiving batteries, wherein electric heating films are arranged in the receiving slots, and the electric heating films are wound around the batteries.

[0007] Furthermore, both side surfaces of the electric heating film are provided with a silica gel layer.

[0008] Furthermore, an epoxy resin layer is provided on the electric heating film, and the electric heating film and the silicone layer are both located in the epoxy resin layer.

[0009] Furthermore, a glue filling layer is provided between the electric heating film and the battery.

[0010] Furthermore, a baffle is provided at one end of the accommodating groove, and one end of the battery abuts against the inner surface of the baffle.

[0011] Furthermore, the baffle is provided with a positioning groove at one end facing the battery, the battery is inserted into the positioning groove, a rubber sealing ring is provided in the positioning groove, and the end of the battery is snap-fitted with the rubber sealing ring.

[0012] Furthermore, the electric heating film is a pct heating film.

[0013] Furthermore, a PCB-A board is arranged on the mounting frame, and the battery and the electric heating film are electrically connected to the PCB-A board.

[0014] In summary, the present invention includes at least one of the following beneficial technical effects:

[0015] In a low-temperature environment, PCB-A energizes the electric heating film, which generates heat to heat each battery at the same time. The heating is highly uniform, allowing each battery to quickly reach the required temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is an explosion diagram of the utility model.

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0019] Figure 4 It is a cross-sectional schematic diagram of the electric heating film in the utility model.

[0020] In the figure: 1, mounting frame; 11, receiving groove; 12, baffle; 121, positioning groove; 13, PCB-A board; 2, battery; 3, electric heating film; 31, silicone layer; 32, epoxy resin layer; DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] The utility model embodiment discloses a heating structure of a low temperature energy storage battery, such as Figure 1-4 As shown, it includes a mounting frame 1, which is arranged in a square shape. A plurality of receiving grooves 11 are provided on one side surface of the mounting frame 1. The two ends of the receiving grooves 11 are arranged through, and the plurality of receiving grooves 11 are arranged in a matrix shape of multiple rows and multiple columns. A battery 2 is arranged in the receiving groove 11. At the same time, an electric heating film 3 is arranged in the receiving groove 11. The electric heating film 3 is located between the inner wall of the receiving groove 11 and the battery 2. The electric heating film 3 is wrapped around the battery 2. In addition, a PCB-A board 13 is fixedly installed on the mounting frame 1. The battery 2 and the electric heating film 3 are both electrically connected to the PCB-A board 13. The PCB-A board 13 is integrated with multiple electronic components such as a control module and a temperature monitoring module. The current of the battery 2 is input to the outside after passing through the PCB-A board 13. In a low temperature environment, the PCB-A board 13 energizes the electric heating film 3, and the electric heating film generates heat, thereby heating each battery 2 at the same time, so that the battery 2 reaches the required temperature.

[0024] At the same time, the electric heating film 3 is a PCT heating film. The PCT heating film has good heating performance, can quickly convert electrical energy into thermal energy, and heat the target object to the required temperature in a shorter time, thereby improving the heating efficiency. At the same time, the PCT heating film can achieve relatively uniform heating, avoiding local overheating or overcooling, and helping to protect the surface quality and performance of the heated object. In addition, the PCT heating film is thinner and lighter than the traditional heating method. At the same time, a silicone layer 31 is provided on both sides of the electric heating film 3. The silicone layer 31 can protect the electric heating film 3 and evenly disperse the heat generated by the electric heating film 3. In addition, an epoxy resin layer 32 is provided on the electric heating film 3. The electric heating film 3 and the silicone layer 31 are both located in the epoxy resin layer 32. The epoxy resin layer 32 can solidify the electric heating film 3 and maintain its shape, making it convenient for operators to assemble it into the receiving groove 11.

[0025] In addition, a glue layer is provided between the electric heating film 3 and the battery 2, and the glue layer can be preferably epoxy resin glue. The glue layer can fill the gap between the electric heating film 3 and the battery 2, and the heating effect is better. In addition, a baffle 12 is provided at one end of the accommodating groove 11, and one end of the battery 2 abuts against the inner surface of the baffle 12. When the operator assembles the battery 2, the baffle 12 can prevent the battery 2 from falling off, and a through hole is provided on the baffle 12, which can facilitate the operator to weld the battery 2 connecting piece. In addition, a positioning groove 121 is provided at one end of the baffle 12 facing the battery 2, and the battery 2 is inserted into the positioning groove 121. A rubber sealing ring is provided in the positioning groove 121, and the end of the battery 2 is snap-fitted with the rubber sealing ring. The rubber sealing ring can prevent the glue from flowing out of the through hole when the operator fills the glue layer.

[0026] The implementation principle of the heating structure of the energy storage battery at low temperature in the embodiment of the utility model is as follows: in a low temperature environment, the PCB-A board 13 supplies power to the electric heating film 3, the electric heating film generates heat, and heats each battery 2 at the same time, with high heating uniformity, so that each battery 2 can quickly reach the required temperature.

[0027] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A heating structure for energy storage batteries at low temperatures, characterized in that: The invention comprises a mounting frame (1), wherein a plurality of receiving grooves (11) for receiving batteries (2) are arranged on the mounting frame (1), an electric heating film (3) is arranged in the receiving groove (11), the electric heating film (3) is wound around the battery (2), and silicone layers (31) are arranged on both side surfaces of the electric heating film (3).

2. The heating structure of a low temperature energy storage battery according to claim 1, characterized in that: An epoxy resin layer (32) is provided on the electric heating film (3), and the electric heating film (3) and the silicone layer (31) are both located inside the epoxy resin layer (32).

3. The heating structure of a low temperature energy storage battery according to claim 1, characterized in that: A glue filling layer is provided between the electric heating film (3) and the battery (2).

4. The heating structure of a low temperature energy storage battery according to claim 3, characterized in that: A baffle (12) is provided at one end of the accommodating groove (11), and one end of the battery (2) abuts against the inner surface of the baffle (12).

5. A heating structure for a low temperature energy storage battery according to claim 4, characterized in that: The baffle (12) is provided with a positioning groove (121) at one end facing the battery (2), the battery (2) is inserted into the positioning groove (121), a rubber sealing ring is provided in the positioning groove (121), and the end of the battery (2) is snap-fitted with the rubber sealing ring.

6. The heating structure of a low temperature energy storage battery according to claim 1, characterized in that: The electric heating film (3) is a pct heating film.

7. The heating structure of a low temperature energy storage battery according to claim 1, characterized in that: A PCB-A board (13) is arranged on the mounting frame (1), and the battery (2) and the electric heating film (3) are both electrically connected to the PCB-A board (13).

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