Battery module structure capable of protecting service life of battery cell

Abstract

The utility model discloses a battery module structure capable of protecting the service life of a battery cell, and relates to the technical field of batteries. The battery module structure capable of protecting the service life of the battery cells comprises a first module frame, and a plurality of battery cells are placed in the first module frame; a heat conduction pipe is fixedly connected into the cooling box. The surface of the cooling box is fixedly connected with a plurality of cooling fins; the corresponding positive and negative electrodes of the plurality of battery cells are fixedly connected with electrode connecting plates, three battery cell temperature acquisition points are arranged above the first module frame, and through the arrangement of the cooling box and the plurality of cooling fins, heat in the battery module can be conveniently transferred into a cooling liquid in the cooling box, so that the cooling efficiency of the battery module is improved; heat of cooling liquid in the cooling box is dissipated through the heat conduction pipe and the cooling fins, the performance of the battery module is improved, the service life of the battery module is prolonged, meanwhile, the surface temperature of the battery cell can be accurately measured through the electrode connecting plate, thermal runaway of the battery cell can be prevented, the charging and discharging efficiency of the battery cell is improved, and the service life of the battery module is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery module structure capable of protecting the life of a battery core. Background Art

[0002] With the rapid development of the new energy industry, the concept of energy storage is becoming increasingly important. Battery modules can only operate stably and safely within a certain temperature range. In more demanding environments and usage requirements, battery modules need to operate stably and safely for a long time.

[0003] Existing battery modules sometimes use air cooling for heat dissipation. By designing a fan inside the battery box, forced convection is formed to remove the heat from the surface of the battery module. In response to the rapid temperature rise caused by large current charging and discharging, the battery cells are close to each other, and the heat inside them is not easy to dissipate, resulting in insufficient heat exchange of the battery module, resulting in unsatisfactory air cooling effect, and thus affecting the life of the battery module. For this reason, the utility model proposes a new solution. Utility Model Content

[0004] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art, and to provide a battery module structure that can protect the life of the battery cells. It can solve the problem that a fan designed in the battery box forms forced convection to remove the heat from the surface of the battery module, and the battery cells are close to each other due to the rapid temperature rise caused by large current charging and discharging, and the heat inside them is not easy to dissipate, resulting in insufficient heat exchange of the battery module, resulting in unsatisfactory air cooling effect, and thus affecting the life of the battery module.

[0005] To achieve the above object, the present invention provides the following technical solution: a battery module structure capable of protecting the life of a battery cell, comprising a first module frame, wherein a plurality of battery cells are placed inside the first module frame;

[0006] A battery module heat dissipation assembly is provided on the surface of the first module frame. The battery module heat dissipation assembly includes a cooling box, which is fixedly connected to the front end of the first module frame. A heat pipe is fixedly connected to the interior of the cooling box, and both ends of the heat pipe extend out of the cooling box.

[0007] A liquid drain pipe and a liquid injection pipe are fixedly connected to the surface of the cooling box, and a plurality of heat sinks are fixedly connected to the surface of the cooling box;

[0008] The corresponding positive and negative electrodes of the multiple battery cells are fixedly connected to the electrode connection plates, and the surfaces of the free electrode connection plates on the left and right sides of the multiple battery cells are fixedly connected to the terminal posts;

[0009] Three battery cell temperature collection points are provided above the first module frame, and the three battery cell temperature collection points are fixedly connected to corresponding electrode connection plates respectively.

[0010] Preferably, the cooling box, the heat sink, the heat conducting pipe, the drain pipe and the injection pipe are each provided in two groups, which are symmetrically arranged on the front and rear sides of the first module frame.

[0011] Preferably, a second module frame is provided inside the first module frame, and two module end plates are fixedly connected inside the second module frame;

[0012] There are two sets of second module frames and module end plates, which are symmetrically arranged inside the first module frame, and the two second module frames are fixed inside the first module frame by fixing bolts.

[0013] Preferably, a plurality of battery cell insulation plates are provided inside the first module frame, and the plurality of battery cell insulation plates all cover the surfaces of corresponding battery cells.

[0014] Preferably, a pressure strip is provided above the first module frame, and the two second module frames are fixedly connected to the pressure strip via fixing bolts, and the pressure strip is U-shaped.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The battery module structure that can protect the life of the battery cell facilitates the transfer of heat in the battery module to the coolant inside the cooling box through the arrangement of a cooling box and multiple heat sinks. The heat of the coolant inside the cooling box is dissipated through the heat pipes and heat sinks, ensuring that the battery module operates within an appropriate temperature range, preventing overheating and resulting performance degradation or damage, thereby improving its performance and service life. At the same time, the electrode connecting plate can accurately measure the surface temperature of the battery cell, facilitates accurate detection of the temperature of the battery module, can prevent thermal runaway of the battery cell, and at the same time improve the charge and discharge efficiency of the battery cell, thereby improving the service life of the battery module.

[0017] 2. The battery module structure that can protect the life of the battery cell, the second module frame is used in conjunction with the pressure strip. The shape of the pressure strip can limit the expansion of the battery cell, maintain the stability of the battery module, enhance the structural strength of the battery module, make the battery module more sturdy and durable, and also help protect the battery cell from external impact or damage, thereby increasing the service life of the battery module.

[0018] 3. The battery module structure that can protect the life of the battery cell has a pressure strip fixed to the second module frame by bolts, and the second module frame is fixed to the first module frame by bolts, which facilitates the assembly and disassembly of the battery module and improves the flexibility of battery module assembly and the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of a battery module structure that can protect the life of the battery cell of the present invention;

[0021] Figure 2 This is a schematic diagram of the battery cell of the utility model;

[0022] Figure 3 This is a schematic diagram of the insulation board of the battery cell of the utility model;

[0023] Figure 4 This is a schematic diagram of the heat pipe of the utility model.

[0024] Figure numerals: 1. first module frame; 2. battery cell; 3. battery cell insulation plate; 4. second module frame; 5. cooling box; 6. heat sink; 7. module end plate; 8. electrode connection plate; 9. battery cell temperature collection point; 10. heat pipe; 11. terminal; 12. pressure strip; 13. drain pipe; 14. injection pipe. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] See also Figure 1-4The utility model provides a technical solution: a battery module structure that can protect the life of a battery cell, comprising a first module frame 1, a plurality of battery cells 2 are placed inside the first module frame 1, a battery module heat dissipation component, the battery module heat dissipation component is arranged on the surface of the first module frame 1, and the battery module heat dissipation component includes a cooling box 5, the cooling box 5 is fixedly connected to the front end of the first module frame 1, a heat conducting pipe 10 is fixedly connected to the inside of the cooling box 5, both ends of the heat conducting pipe 10 extend out of the cooling box 5, a drainage pipe 13 and a liquid injection pipe 14 are fixedly connected to the surface of the cooling box 5, a plurality of heat sinks 6 are fixedly connected to the surface of the cooling box 5, the corresponding positive and negative electrodes of the plurality of battery cells 2 are fixedly connected to the electrode connecting plates 8, and the surfaces of the free electrode connecting plates 8 on the left and right sides of the plurality of battery cells 2 are fixedly connected to the terminal posts 11, and three battery cell temperature collection points 9 are arranged above the first module frame 1, and the three battery cell temperature collection points 9 are respectively fixedly connected to the corresponding electrode connecting plates 8.

[0030] There are two groups of cooling boxes 5 , heat sinks 6 , heat pipes 10 , liquid drain pipes 13 and liquid injection pipes 14 , which are symmetrically arranged on the front and back sides of the first module frame 1 .

[0031] Since the battery core 2 will generate heat inside during use, coolant is injected into the cooling box 5 through the injection pipe 14, and coolant is passed into the heat pipe 10, and multiple heat sinks 6 are used to dissipate the heat of the coolant inside the cooling box 5, ensuring that the battery module operates within a suitable temperature range to prevent overheating, which may cause performance degradation or damage. The use of coolant helps to maintain the optimal operating temperature of the battery module, thereby improving its performance and service life. At the same time, the electrode connecting plate 8 can accurately measure the surface temperature of the battery core 2, facilitate accurate detection of the temperature of the battery module, prevent thermal runaway of the battery core 2, and improve the charging and discharging efficiency of the battery core 2, thereby improving the service life of the battery module.

[0032] A second module frame 4 is provided inside the first module frame 1. Two module end plates 7 are fixedly connected to the interior of the second module frame 4. There are two sets of second module frames 4 and module end plates 7, which are symmetrically arranged inside the first module frame 1, and the two second module frames 4 are fixed to the interior of the first module frame 1 by fixing bolts.

[0033] By setting the second module frame 4 and the module end plate 7, it is convenient to reinforce the battery module to prevent excessive expansion when the battery cell 2 is charged and discharged. The module end plate 7 can support the second module frame 4, reduce the degree of deformation of the second module frame 4, enhance the structural strength of the battery module, improve the protection effect of the battery cell 2, make the battery module evenly stressed, and facilitate transportation, thereby ensuring the safety and stability of the battery module and thus improving the service life of the battery module.

[0034] A plurality of battery cell insulation plates 3 are disposed inside the first module frame 1 , and the plurality of battery cell insulation plates 3 all cover the surfaces of the corresponding battery cells 2 .

[0035] The battery cell insulating plate 3 is made of insulating material. When covered on the surface of the battery cell 2, it can enhance the insulation performance between multiple battery cells 2, prevent current short circuit, and ensure the safe operation of the battery system. At the same time, the battery cell 2 can provide physical protection for the battery cell 2 to prevent external impact or friction from causing damage to the battery cell 2. At the same time, it prevents the battery cell 2 from generating friction during vibration, destroying the insulation layer of the battery cell itself, and causing a short circuit. By covering the battery cell insulating plate 3, the battery cell 2 is not prone to short circuit or explosion under abnormal conditions (such as overcurrent, high temperature), thereby improving the overall safety of the battery system.

[0036] A holding strip 12 is provided above the first module frame 1 , and the two second module frames 4 are fixedly connected to the holding strip 12 via fixing bolts, and the holding strip 12 is U-shaped.

[0037] The pressure strip 12 is provided to compact the battery cell 2, thereby preventing the battery cell 2 from shaking during vibration of the battery module, thereby improving the stability of the battery cell 2 and making it easier to withstand the expansion force generated by the battery during use.

[0038] The second module frame 4 is used in conjunction with the pressure strip 12. The shape of the pressure strip 12 can limit the expansion of the battery cell 2, maintain the stability of the battery module, enhance the structural strength of the battery module, make the battery module more solid and durable, and also help protect the battery cell 2 from external impact or damage, thereby extending the service life of the battery module.

[0039] The hold-down strip 12 is fixed to the second module frame 4 by bolts, and the second module frame 4 is fixed to the first module frame 1 by bolts, which facilitates assembly and disassembly of the battery module and improves the flexibility of battery module assembly and the convenience of maintenance.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A battery module structure capable of protecting the life of a battery cell, characterized by: It comprises a first module frame (1), wherein a plurality of battery cells (2) are placed inside the first module frame (1); A battery module heat dissipation component is arranged on the surface of the first module frame (1), and the battery module heat dissipation component includes a cooling box (5), the cooling box (5) is fixedly connected to the front end of the first module frame (1), a heat pipe (10) is fixedly connected to the interior of the cooling box (5), and both ends of the heat pipe (10) extend out of the cooling box (5); A liquid discharge pipe (13) and a liquid injection pipe (14) are fixedly connected to the surface of the cooling box (5), and a plurality of heat sinks (6) are fixedly connected to the surface of the cooling box (5); The corresponding positive and negative electrodes of the plurality of battery cells (2) are all fixedly connected to electrode connection plates (8), and the surfaces of the free electrode connection plates (8) on the left and right sides of the plurality of battery cells (2) are all fixedly connected to terminal posts (11); Three battery core temperature collection points (9) are provided above the first module frame (1), and the three battery core temperature collection points (9) are respectively fixedly connected to corresponding electrode connection plates (8).

2. A battery module structure capable of protecting the life of a battery cell according to claim 1, characterized in that: The cooling box (5), the heat sink (6), the heat conducting pipe (10), the liquid drain pipe (13) and the liquid injection pipe (14) are each provided in two groups, which are symmetrically arranged on the front and rear sides of the first module frame (1).

3. The battery module structure capable of protecting the life of the battery cell according to claim 1, characterized in that: A second module frame (4) is provided inside the first module frame (1), and two module end plates (7) are fixedly connected inside the second module frame (4); There are two sets of second module frames (4) and module end plates (7), which are symmetrically arranged inside the first module frame (1), and the two second module frames (4) are fixed inside the first module frame (1) by fixing bolts.

4. The battery module structure capable of protecting the life of the battery cell according to claim 1, characterized in that: A plurality of battery core insulation plates (3) are provided inside the first module frame (1), and the plurality of battery core insulation plates (3) all cover the surfaces of corresponding battery cores (2).

5. The battery module structure capable of protecting the life of the battery cell according to claim 3, characterized in that: A pressure strip (12) is provided above the first module frame (1), and the two second module frames (4) are fixedly connected to the pressure strip (12) via fixing bolts, and the pressure strip (12) is in a "U" shape.

Images