Bilateral single-branch series liquid-cooled liquid-thermal battery module structure

Abstract

The utility model discloses a double-side single-branch series liquid cooling liquid thermal battery module structure which comprises battery cells, silica gel pads, end plate PC insulating sheets, end plates, aluminum bars, insulating seats, a first liquid cooling plate, a second liquid cooling plate and heat conduction structural adhesive, the battery cells are adhered through the silica gel pads, the end plates are adhered with the end plate PC insulating sheets, and the end plates are connected with the end plate PC insulating sheets. The battery cell and the end plate are adhered by using an end plate PC insulating sheet, aluminum bars are welded on a positive pole and a negative pole of the battery cell, an insulating seat is mounted on the end plate, the first liquid cooling plate and the second liquid cooling plate are respectively adhered on the side surface of the battery cell by using a heat-conducting structural adhesive, a first liquid cooling plate water inlet and a first liquid cooling plate water outlet are formed in the first liquid cooling plate, and a second liquid cooling plate water outlet is formed in the second liquid cooling plate. A second liquid cooling plate water outlet and a second liquid cooling plate water inlet are formed in the second liquid cooling plate, and the first liquid cooling plate water outlet and the second liquid cooling plate water inlet are connected through a connecting pipeline. According to the utility model, a double-side single-branch liquid-cooling liquid-heating series connection new flow channel structure is adopted, so that the overall cooling and heating of the battery module are greatly improved.

Description

Technical field:

[0001] The utility model relates to a double-sided single-branch series-connected liquid-cooled and liquid-hot battery module structure, which belongs to a new energy power battery module. Background technology:

[0002] The development of new energy has passed the stage of rapid development and has gradually entered a stage of stable development. Especially in the early stage of new energy module field, the situation of three types of battery cells, cylindrical, square and soft pack, has changed. The development of the market has put forward higher requirements for fast charging and battery life.

[0003] The existing liquid cooling technology uses a bottom liquid cooling structure, and the cooling of the entire battery module cannot achieve the expected effect. In the environment where new energy vehicles require fast charging and extended battery cell warranty time, the cooling of battery cells assembled into battery modules has become a crucial technical innovation point.

[0004] The existing heating technology uses silicone heating, and the entire heating of the battery module has the risk of being out of control. In order to control the overall safety performance of new energy vehicles, liquid heating of the battery module has become a crucial technical innovation point. Utility model content:

[0005] The utility model provides a double-sided single-branch series liquid-cooled and liquid-hot battery module structure in order to solve the problems existing in the above-mentioned prior art. The battery module adopts a double-sided single-branch liquid-cooled and liquid-hot series new flow channel structure, the overall cooling and heating of the battery module are greatly improved, the safety factor is greatly improved, and the overall solution of the battery module has high safety, low cost and long life.

[0006] The technical solutions adopted by the utility model include: a double-sided single-branch series liquid-cooled liquid-hot battery module structure, including a battery cell, a silicone pad, an end plate PC insulating sheet, an end plate, an aluminum bar, an insulating seat, a first liquid cooling plate, a second liquid cooling plate, a thermally conductive structural adhesive and a connecting pipe, the battery cells are bonded to each other using a silicone pad, the end plate is bonded to the end plate PC insulating sheet, the battery cell and the end plate are bonded to each other using an end plate PC insulating sheet, an aluminum bar is welded on the positive and negative poles of the battery cell, an insulating seat is installed on the end plate, the first liquid cooling plate and the second liquid cooling plate are respectively bonded to the sides of the battery cell using a thermally conductive structural adhesive, a first liquid cooling plate water inlet and a first liquid cooling plate water outlet are formed on the first liquid cooling plate, a second liquid cooling plate water outlet and a second liquid cooling plate water inlet are formed on the second liquid cooling plate, and the first liquid cooling plate water outlet and the second liquid cooling plate water inlet are connected by a connecting pipe.

[0007] Furthermore, the battery core, the end plate PC insulating sheet and the outer side of the end plate are sleeved with steel belts.

[0008] Furthermore, foam and a PC insulation sheet for the battery cell are bonded and installed on the top of the battery cell, and the foam and the PC insulation sheet for the battery cell are located below the aluminum bar.

[0009] Furthermore, an aluminum bar insulating sheet is installed above the aluminum bar.

[0010] Furthermore, a liquid cooling plate PC insulating sheet is provided between the first liquid cooling plate, the second liquid cooling plate and the battery core.

[0011] The utility model has the following beneficial effects:

[0012] (1) The utility model uses heat-conducting structural adhesive on both sides of the liquid cooling plate, which can ensure the rapid stacking of modules. A single module uses two liquid cooling plate structures, which can ensure the rapid installation and safety of the liquid cooling and liquid heating system.

[0013] (2) The utility model uses a double-sided double-branch liquid heating structure to quickly heat the battery cell to the normal operating temperature at a temperature below 20 degrees in a very short time;

[0014] (3) The liquid cooling and heating plate of the utility model uses a double-sided single-branch liquid cooling and heating series water channel structure, which can better cool and heat the battery cells. Description of the drawings:

[0015] Figure 1 This is a schematic diagram of the structural decomposition of the double-sided single-branch series liquid-cooled and liquid-hot battery module of the utility model.

[0016] Figure 2 This is another exploded schematic diagram of the double-sided single-branch series liquid-cooled and liquid-hot battery module structure of the utility model.

[0017] Figure 3 This is a schematic diagram of the structural assembly of the double-sided single-branch series liquid-cooled and liquid-hot battery module of the utility model. Specific implementation method:

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] The utility model discloses a double-sided single-branch series liquid-cooled liquid-hot battery module structure, comprising a battery cell 1, a silicone pad 2, an end plate PC insulating sheet 3, an end plate 4, an aluminum bar 5, an insulating seat 6, a steel belt 7, foam 8, a battery cell PC insulating sheet 9, an aluminum bar insulating sheet 10, a first liquid cooling plate 11, a second liquid cooling plate 12, a liquid cooling plate PC insulating sheet 13, a thermal conductive structural adhesive 14, a connecting pipe 15, a first liquid cooling plate water inlet 16, a first liquid cooling plate water outlet 17, a second liquid cooling plate water outlet 18 and a second liquid cooling plate water inlet 19.

[0020] The cells 1 are bonded with each other using a silicone pad 2, the end plate 4 is bonded with the end plate PC insulating sheet 3, and the cell 1 is bonded with the end plate 4 using the end plate PC insulating sheet 3. Aluminum bars 5 are welded on the positive and negative poles of the cell 1, and an insulating seat 6 is installed on the end plate 4. The steel belt 7 is sleeved on the outer side of the cell 1, the end plate PC insulating sheet 3 and the end plate 4 to fasten the entire battery module.

[0021] The foam 8 and the cell PC insulating sheet 9 are bonded and installed above the cell 1 and below the aluminum bar 5. The foam 8 and the cell PC insulating sheet 9 are mainly used for insulation and maintaining the aluminum bar welding barrier. The aluminum bar insulating sheet 10 is installed above the aluminum bar 5 for insulation of the entire battery module. The first liquid cooling plate 11 and the second liquid cooling plate 12 are respectively bonded to the side of the cell 1 using a thermal conductive structural adhesive 14. A liquid cooling plate PC insulating sheet 13 is used between the first liquid cooling plate 11 and the second liquid cooling plate 12 and the cell 1 to increase the insulation layer.

[0022] A first liquid cooling plate water inlet 16 and a first liquid cooling plate water outlet 17 are formed on the first liquid cooling plate 11, and a second liquid cooling plate water outlet 18 and a second liquid cooling plate water inlet 19 are formed on the second liquid cooling plate 12, wherein the first liquid cooling plate water outlet 17 and the second liquid cooling plate water inlet 19 are connected via a connecting pipe 15.

[0023] The double-sided single-branch series liquid-cooled liquid-thermal battery module structure of the utility model includes a total of one branch, which is: first liquid cooling plate water inlet 16 → first liquid cooling plate 11 → first liquid cooling plate water outlet 17 → connecting pipe 15 → second liquid cooling plate water inlet 19 → second liquid cooling plate 12 → second liquid cooling plate water outlet 18.

[0024] In the double-sided single-branch series liquid-cooled and liquid-heated battery module structure of the utility model, the first liquid cooling plate 11 and the second liquid cooling plate 12 on both sides form a whole series connection to complete liquid cooling and liquid heating of a single module, and quickly cool down the battery module during fast charging. In cold areas in winter, the liquid heat can quickly heat the battery cell to above zero degrees, so that the battery quickly reaches the optimal battery operating temperature.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A double-sided single-branch series liquid-cooled and liquid-heated battery module structure, characterized in that: The invention comprises a battery cell (1), a silicone pad (2), an end plate PC insulating sheet (3), an end plate (4), an aluminum bar (5), an insulating seat (6), a first liquid cooling plate (11), a second liquid cooling plate (12), a heat-conducting structural adhesive (14) and a connecting pipe (15), wherein the battery cells (1) are bonded to each other using the silicone pad (2), the end plate (4) is bonded to the end plate PC insulating sheet (3), the battery cells (1) are bonded to the end plate (4) using the end plate PC insulating sheet (3), the aluminum bar (5) is welded to the positive and negative poles of the battery cell (1), and the An insulating seat (6) is installed on the end plate (4); the first liquid cooling plate (11) and the second liquid cooling plate (12) are respectively adhered to the side of the battery cell (1) using a heat-conducting structural adhesive (14); a first liquid cooling plate water inlet (16) and a first liquid cooling plate water outlet (17) are formed on the first liquid cooling plate (11); a second liquid cooling plate water outlet (18) and a second liquid cooling plate water inlet (19) are formed on the second liquid cooling plate (12); the first liquid cooling plate water outlet (17) and the second liquid cooling plate water inlet (19) are connected via a connecting pipe (15).

2. The double-sided single-branch series liquid-cooled and liquid-heated battery module structure according to claim 1, characterized in that: The outer sides of the battery core (1), the end plate PC insulating sheet (3) and the end plate (4) are sleeved with a steel belt (7).

3. The double-sided single-branch series liquid-cooled and liquid-heated battery module structure according to claim 2, characterized in that: Foam (8) and a cell PC insulating sheet (9) are bonded and installed above the cell (1), and the foam (8) and the cell PC insulating sheet (9) are located below the aluminum bar (5).

4. The double-sided single-branch series liquid-cooled and liquid-heated battery module structure according to claim 3, characterized in that: An aluminum bar insulating sheet (10) is installed above the aluminum bar (5).

5. The double-sided single-branch series liquid-cooled and liquid-heated battery module structure according to claim 4, characterized in that: A liquid cooling plate PC insulating sheet (13) is provided between the first liquid cooling plate (11), the second liquid cooling plate (12) and the battery core (1).

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