Heat conduction device for effectively improving influence of discharge temperature rise of battery

Abstract

The utility model discloses a heat conduction device capable of effectively improving the influence of discharge temperature rise of a battery, which comprises two heat conduction plates which are correspondingly and fixedly arranged on two sides of a heat conduction box in parallel and are used for leading out the power generation temperature of a lithium battery cell; the heat conduction plate comprises a plurality of convex plates, a plurality of concave plates and a plurality of heat dissipation plates, and the convex plates and the concave plates are alternately arranged from top to bottom so that the surface of the heat conduction plate can be in a wave shape. Wave-shaped heat conduction plates are installed on the two sides of a heat conduction box on the heat conduction device, so that a plurality of convex plates on the heat conduction plates abut against lithium battery cells, gaps generated between a plurality of concave plates and the lithium battery cells are used for air circulation, and the contact area between the heat conduction plates and a coolant in the heat conduction box is increased through the heat conduction plates with the wave-shaped surfaces; therefore, the heat conduction plate timely converts heat generated by discharging of the lithium battery into the coolant, and the high temperature generated by the lithium battery cell is prevented from influencing the discharging conversion rate and the electricity-containing efficiency of the lithium battery.

Description

Technical Field

[0001] The utility model relates to the technical field of heat conduction of aluminum batteries, and in particular to a heat conduction device which can effectively improve the influence of temperature rise during battery discharge. Background Art

[0002] With the continuous promotion of new energy technologies, lithium-ion batteries are increasingly used in the vehicle industry. Usually, lithium-ion batteries need to be assembled into battery modules before they can be used in vehicles. When assembling battery modules, there are high requirements for battery consistency, and the cell capacity division is an important process to improve battery consistency. Capacity division generally refers to the first full charge and discharge of the cell. The battery capacity can be divided while the battery is activated. The battery will be accompanied by a temperature rise during the discharge process. The temperature has a certain effect on the formation and discharge battery capacity. The higher the discharge temperature, the higher the battery capacity. However, the higher the battery capacity is, the better. In order to improve the consistency of the battery, there needs to be an upper and lower limit for the control of the battery capacity. Therefore, it is necessary to conduct heat to the discharge temperature so that the formation temperature of the battery is controlled within a small range to minimize its fluctuation, reduce the difference in discharge temperature of different cells, and improve the efficiency of battery discharge and storage.

[0003] The existing battery discharge temperature heat conduction device (lithium battery formation temperature regulating device and container with application number 202020962257.6) is configured by arranging partitions with bosses on both sides of the battery cell so that the partitions can dissipate the heat generated by the discharge of the abutted battery cell, and the bosses are of a planar structure, and no air passage is provided in the middle so that the heat generated by the battery cell can be converted into the air passage and fully contact the heat conduction plate of the heat conduction device, thereby affecting the temperature dissipation efficiency of the battery cell, and no heat dissipation fins extending into the coolant are provided inside the bosses on the heat conduction device so that the heat dissipation fins can dissipate the heat generated by the battery cell in time, thereby affecting the capacitance conversion efficiency of the battery. Utility Model Content

[0004] In view of the above-mentioned defects or shortcomings in the prior art, it is desired to provide a heat-conducting device that can effectively improve the influence of battery discharge temperature rise, so as to solve the problem that the existing battery heat-conducting device extracts the heat generated by the discharge of the abutted battery cells through a partition, and the boss is a planar structure, and no air passage is provided in the middle so that the heat generated by the battery cells can be converted into the air passage and fully contact the heat-conducting plate of the heat-conducting device, thereby affecting the temperature extraction efficiency of the battery cells, and no heat-dissipating fins extending into the coolant are provided inside the boss on the heat-conducting device so that the heat-dissipating fins can promptly extract the heat generated by the battery cells, thereby affecting the technical problem of the capacitance conversion efficiency of the battery.

[0005] According to the technical solution provided in the embodiment of the present application, a heat conduction device that effectively improves the influence of battery discharge temperature rise includes two heat conduction plates, which are fixedly installed on both sides of the heat conduction box in parallel and correspondingly, and are used to derive the power generation temperature of the lithium battery cell;

[0006] The heat conducting plate comprises a plurality of convex plates, a plurality of concave plates and a plurality of heat dissipation plates, wherein the plurality of convex plates and the plurality of concave plates are alternately arranged from top to bottom so that the surface of the heat conducting plate is wavy, and each of the convex plates abuts against a lithium battery cell, and each of the concave plates is used for air flow inside the lithium battery cell, and each of the heat dissipation plates is horizontally fixedly installed at the rear end of each convex plate for heat extraction of the convex plate.

[0007] Furthermore, a plurality of the convex plates and a plurality of the concave plates are in an open trapezoidal structure.

[0008] Furthermore, a plurality of heat dissipation fins are provided at the upper and lower ends of the heat dissipation plate, and the plurality of heat dissipation fins are arranged in parallel and at intervals to increase the contact area between the heat dissipation plate and the coolant flowing in the heat conduction box.

[0009] Furthermore, mounting openings are provided on both sides of the heat conduction box, and sealing gaskets are provided at the mounting openings for sealing the connection between the heat conduction plates.

[0010] Furthermore, the heat conduction box is also provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is arranged at the bottom of the heat conduction box, and the liquid inlet pipe is arranged at the top of the heat conduction box.

[0011] Furthermore, the heat conducting plate and the heat dissipating plate are made of metal, and the heat conducting box is made of insulating material.

[0012] In summary, the beneficial effects of this application are:

[0013] 1. By installing wavy heat-conducting plates on both sides of the heat-conducting box on the heat-conducting device, several convex plates on the heat-conducting plates are in contact with the lithium battery cells, and the gaps between several concave plates and the lithium battery cells are used for air circulation. The heat-conducting plates with wavy surfaces increase the contact area with the coolant in the heat-conducting box, so that the heat-conducting plates can timely convert the heat generated by the discharge of the lithium battery into the coolant, preventing the high temperature generated by the lithium battery cells from affecting the discharge conversion rate and capacity efficiency of the lithium battery;

[0014] Second, by installing corresponding heat sinks in the grooves of several convex plates on the heat conducting plate, and arranging parallel and spaced heat dissipation fins at the upper and lower ends of the heat sink, the heat dissipation area is increased, so that the heat sink can penetrate deep into the coolant in the heat conducting box, and the heat converted by the heat conducting plate can be transferred to the coolant in time, thereby improving the heat conduction efficiency of the heat conducting device during the battery discharge process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

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

[0017] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the heat conducting plate of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the heat dissipation plate of the utility model.

[0020] Numbers in the figure: heat conduction plate -100, convex plate -110, concave plate -120, heat sink -130, heat sink fin -131, heat conduction box -200, sealing gasket -210, liquid inlet pipe -300, liquid outlet pipe -400. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] A heat conduction device that effectively improves the effect of battery discharge temperature rise, the structure of which is as follows Figure 1-Figure 4 As shown, it includes two heat conducting plates 100, which are fixedly installed on both sides of the heat conducting box 200 in parallel and correspondingly, and are used to export the power generation temperature of the lithium battery cell; the heat conducting plate 100 includes a plurality of convex plates 110, a plurality of concave plates 120 and a plurality of heat dissipation plates 130, and the plurality of convex plates 110 and the plurality of concave plates 120 are alternately arranged from top to bottom so that the surface of the heat conducting plate 100 is wavy, and each convex plate 110 is in contact with the lithium battery cell, and each concave plate 120 is used for the air flow inside the lithium battery cell, and each heat dissipation plate 130 is horizontally fixedly installed at the rear end of each convex plate 110, and is used to export the heat of the convex plate 110.

[0024] When the heat conduction device extracts the heat generated by the discharge of the lithium battery cell, a metal heat conduction plate 100 is installed on the installation openings on both sides of the heat conduction box 200, and the heat conduction plate 100 is composed of a plurality of convex plates 110 and a plurality of concave plates 120 alternately arranged from top to bottom, so that the surface of the heat conduction plate 100 presents a wavy structure, and the surfaces of the plurality of convex plates 110 on the heat conduction plate 100 abut against the lithium battery cell, and the gap between the plurality of concave plates 120 and the lithium battery cell is used for air circulation, so that the heat generated by the lithium battery cell during the discharge process can be timely heat-exchanged with the metal heat conduction plate 100, and the coolant input by the liquid inlet pipe 300 arranged at the bottom of the heat conduction box 200 fills the interior of the heat conduction box 200 from the bottom, and extracts the heat from the heat conduction plate 100. The heat is exchanged, and the rear ends of the convex plates 110 of the heat conducting plate 100 are also equipped with heat dissipation plates 130 which penetrate into the coolant. The heat dissipation plates 130 are provided with a plurality of parallel and spaced heat dissipation fins 131, so that the heat dissipation plates 130 can transfer the heat derived from the heat conducting plate 100 to the heat dissipation plates 130, and the heat dissipation plates 130 can exchange heat in the coolant in time. The coolant after the heat exchange is discharged from the liquid outlet pipe 400 at the top of the heat conducting box 200, so that the coolant in the heat conducting box 200 can flow and exchange heat with the heat derived from the heat conducting plate 100, so that the heat conducting plate 100 can always maintain a low temperature state, thereby improving the heat conduction efficiency of the heat conducting device to the heat in the discharge process of the battery, thereby improving the discharge conversion rate and the capacitance efficiency of the lithium battery.

[0025] As a preferred embodiment, please refer to Figure 3 and Figure 4 The plurality of convex plates 110 and the plurality of concave plates 120 are in an open trapezoidal structure, so that the plurality of convex plates 110 and the plurality of concave plates 120 form a wavy surface, thereby increasing the contact area between the heat conducting plate 100 and the coolant in the heat conducting box 200 .

[0026] As a preferred embodiment, please refer to Figure 3 and Figure 4 A plurality of heat dissipation fins 131 are also provided at the upper and lower ends of the heat dissipation plate 130 . The plurality of heat dissipation fins 131 are arranged in parallel and at intervals to increase the contact area between the heat dissipation plate 130 and the coolant flowing in the heat conduction box 200 , thereby improving the heat conversion efficiency of the heat conduction plate 100 .

[0027] As a preferred embodiment, please refer to Figure 1 and Figure 2 The heat conducting box 200 is also provided with mounting openings on both sides, and sealing gaskets 210 are provided at the mounting openings for sealing the connection of the heat conducting plate 100 .

[0028] As a preferred embodiment, please refer to Figure 1 and Figure 2The heat conducting box 200 is also provided with a liquid inlet pipe 300 and a liquid outlet pipe 400. The liquid inlet pipe 300 is arranged at the bottom of the heat conducting box 200, and the liquid inlet pipe 300 is arranged at the top of the heat conducting box 200, so that the coolant enters the heat conducting box 200 from the liquid inlet pipe 300, fills the entire cavity of the heat conducting box 200 from bottom to top, and is discharged from the liquid outlet pipe 400 at the top of the heat conducting box 200, so that the coolant flows to exchange heat with the heat exported by the heat conducting plate 100, so that the heat conducting plate 100 always maintains a low temperature state, thereby improving the heat conversion efficiency of the heat conducting plate 100.

[0029] As a preferred embodiment, please refer to Figure 3 and Figure 4 The heat conducting plate 100 and the heat dissipating plate 130 are made of metal, which has good thermal conductivity and can promptly dissipate the heat generated by the discharge of the lithium battery cell. The heat conducting box 200 is made of insulating material and does not affect the discharge inside the lithium battery.

[0030] The working principle of the heat conduction device of the utility model which effectively improves the influence of battery discharge temperature rise is as follows:

[0031] When the heat conduction device conducts away the heat generated by the discharge of the lithium battery cell, a heat conduction plate 100 made of metal is installed on the mounting openings on both sides of the heat conduction box 200, and the heat conduction plate 100 is composed of a plurality of convex plates 110 and a plurality of concave plates 120 alternately arranged from top to bottom, so that the surface of the heat conduction plate 100 is in a wavy structure, increasing the contact area between the heat conduction plate 100 and the coolant, and the surfaces of the plurality of convex plates 110 on the heat conduction plate 100 are in contact with the lithium battery cell, and the gaps between the plurality of concave plates 120 and the lithium battery cell are used for air circulation, so that the heat generated by the lithium battery cell during the discharge process can be timely heat-exchanged with the metal heat conduction plate 100, and the coolant input by the liquid inlet pipe 300 arranged at the bottom of the heat conduction box 200 fills the interior of the heat conduction box 200 from the bottom, The heat exported by the heat conducting plate 100 is heat exchanged, and the rear end of each convex plate 110 of the heat conducting plate 100 is also equipped with a heat sink 130 that penetrates deep into the coolant. The heat sink 130 is provided with a plurality of parallel and spaced heat dissipation fins 131, so that the heat sink 130 transfers the heat exported by the heat conducting plate 100 to the heat sink 130, and the heat sink 130 performs heat exchange in the coolant in time, and the coolant after heat exchange is discharged from the liquid outlet pipe 400 at the top of the heat conducting box 200, so that the coolant in the heat conducting box 200 flows to perform heat exchange with the heat exported by the heat conducting plate 100, so that the heat conducting plate 100 always maintains a low temperature state, improves the heat conduction efficiency of the heat conducting device to the heat during the battery discharge process, thereby improving the discharge conversion rate and capacitance efficiency of the lithium battery.

[0032] The beneficial effects of the heat conduction device of the utility model that effectively improves the influence of battery discharge temperature rise are as follows:

[0033] 1. By installing a wavy heat conducting plate 100 on both sides of the heat conducting box 200 on the heat conducting device, so that the several convex plates 110 on the heat conducting plate 100 abut against the lithium battery cells, and the gaps between the several concave plates 120 and the lithium battery cells are used for air circulation, and the wavy surface of the heat conducting plate 100 increases the contact area with the coolant in the heat conducting box 200, so that the heat conducting plate 100 can timely convert the heat generated by the discharge of the lithium battery into the coolant, so as to prevent the high temperature generated by the lithium battery cells from affecting the discharge conversion rate and capacitance efficiency of the lithium battery;

[0034] Second, by installing corresponding heat sinks 130 in the grooves of several convex plates 110 on the heat conducting plate 100, and providing parallel and spaced heat dissipation fins 131 at the upper and lower ends of the heat sink 130, the heat dissipation area is increased, so that the heat sink 130 can penetrate deep into the coolant in the heat conducting box 200, and the heat converted by the heat conducting plate 100 can be transferred to the coolant in time, thereby improving the heat extraction efficiency of the heat conducting device during the battery discharge process.

[0035] 3. By arranging a liquid inlet pipe 300 and a liquid outlet pipe 400 on the thermal conductive box 200, the coolant in the thermal conductive box 200 flows into the thermal conductive box 200, and the heat derived from the discharge of the lithium battery cells is timely input into the coolant, and flows out of the thermal conductive box 200, so that the coolant in the thermal conductive box 200 always maintains a low temperature state, thereby improving the heat extraction efficiency of the heat conductive device during the battery discharge process, thereby improving the discharge conversion rate and the capacitance efficiency of the lithium battery.

[0036] The above description is only an explanation of the preferred embodiments of the present application and the technical principles and other schemes used. At the same time, the scope of the utility model involved in the present application is not limited to the technical scheme formed by a specific combination of the above technical features, but also includes other technical schemes formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) to form a technical scheme.

Claims

1. A heat conduction device that effectively improves the effect of battery discharge temperature rise, characterized by: It comprises two heat conducting plates (100) which are fixedly installed in parallel and correspondingly on both sides of a heat conducting box (200) and are used for exporting the power generation temperature of a lithium battery cell; The heat conducting plate (100) comprises a plurality of convex plates (110), a plurality of concave plates (120) and a plurality of heat dissipation plates (130), wherein the plurality of convex plates (110) and the plurality of concave plates (120) are arranged alternately from top to bottom so that the surface of the heat conducting plate (100) is wavy, and each of the convex plates (110) is in contact with a lithium battery cell, and each of the concave plates (120) is used for air flow inside the lithium battery cell, and each of the heat dissipation plates (130) is horizontally fixedly installed at the rear end of each convex plate (110) to extract heat from the convex plate (110).

2. The heat conduction device for effectively improving the effect of battery discharge temperature rise according to claim 1 is characterized in that: The plurality of convex plates (110) and the plurality of concave plates (120) are in an open trapezoidal structure.

3. The heat conduction device for effectively improving the effect of battery discharge temperature rise according to claim 1 is characterized in that: A plurality of heat dissipation fins (131) are also provided at the upper and lower ends of the heat dissipation plate (130); the plurality of heat dissipation fins (131) are arranged in parallel and at intervals to increase the contact area between the heat dissipation plate (130) and the coolant flowing in the heat conduction box (200).

4. The heat conduction device for effectively improving the effect of battery discharge temperature rise according to claim 1 is characterized in that: The heat conduction box (200) is also provided with mounting openings on both sides, and sealing gaskets (210) are provided at the mounting openings for sealing the connection of the heat conduction plate (100).

5. The heat conduction device for effectively improving the effect of battery discharge temperature rise according to claim 1 is characterized in that: The heat conduction box (200) is also provided with a liquid inlet pipe (300) and a liquid outlet pipe (400), wherein the liquid inlet pipe (300) is arranged at the bottom of the heat conduction box (200), and the liquid inlet pipe (300) is arranged at the top of the heat conduction box (200).

6. The heat conduction device for effectively improving the effect of battery discharge temperature rise according to claim 1, characterized in that: The heat conducting plate (100) and the heat dissipating plate (130) are made of metal materials, and the heat conducting box (200) is made of insulating material.

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