Temperature control device for lithium battery

Abstract

The utility model discloses a temperature control device for a lithium battery, and the device comprises two centralized control tubes which are arranged at an interval; the partition plate is arranged in the collecting and controlling pipe and used for dividing the collecting and controlling pipe into a water inlet area and a water outlet area; the water inlet head is arranged on the centralized control pipe and is communicated with the water inlet area; the water outlet head is arranged on the centralized control pipe and is communicated with the water outlet area; the plurality of connecting pipes are arranged between the two collecting and controlling pipes, one end of each connecting pipe is connected with the water inlet area of one collecting and controlling pipe, and the other end of each connecting pipe is connected with the water outlet area of the other collecting and controlling pipe. The temperature control liquid flows into the water inlet area from the water inlet heads of the two centralized control pipes, then flows into the connecting pipe and finally flows out of the water outlet area of the other centralized control pipe, so that the temperature control of the lithium battery is realized. The flow directions of the two adjacent connecting pipes are opposite, so that the temperature control efficiency is prevented from being gradually reduced along with the flow directions, the temperature control efficiency is distributed more uniformly, and the temperature distribution on the lithium battery is more uniform.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature control, in particular to a temperature control device for lithium battery. BACKGROUND

[0002] Lithium battery is a kind of battery using non-aqueous electrolyte solution with lithium metal or lithium alloy as positive / negative electrode material. With the development of science and technology, lithium battery has become mainstream.

[0003] In related technologies, the temperature control of lithium battery is often realized by liquid cooling plate. The existing liquid cooling plate often only sets a curved flow channel on the plate, and realizes the temperature control of lithium battery by condensing liquid or heating liquid. However, the flow channel is complete and long, which leads to uneven temperature distribution of lithium battery. Uneven temperature distribution of lithium battery will reduce the service life of lithium battery, and in extreme cases, it may also induce safety accidents.

[0004] Therefore, it is urgent to provide a temperature control device for lithium battery, which can better control the temperature of lithium battery and make the temperature distribution of lithium battery tend to be uniform. CONTENT OF THE INVENTION

[0005] The present application provides a temperature control device for lithium battery, which aims to solve the problem that the temperature control device in the prior art leads to uneven temperature distribution of lithium battery. Uneven temperature distribution of lithium battery will reduce the service life of lithium battery, and in extreme cases, it may also induce safety accidents.

[0006] To achieve the above-mentioned purpose, the present application provides a temperature control device for lithium battery, comprising: two control pipes, the two control pipes are arranged at intervals; a partition plate, the partition plate is arranged in the control pipe, and is used for separating the control pipe into a water inlet area and a water outlet area; a water inlet head, the water inlet head is arranged in the control pipe and communicates with the water inlet area; a water outlet head, the water outlet head is arranged in the control pipe and communicates with the water outlet area; a plurality of connecting pipes, the plurality of connecting pipes are arranged between the two control pipes, one end of the connecting pipe is connected with the water inlet area of one control pipe, and the other end of the connecting pipe is connected with the water outlet area of the other control pipe.

[0007] In some embodiments, further comprising: a plurality of heat-conducting wings, the plurality of heat-conducting wings are arranged at intervals on one side of the connecting pipe.

[0008] In some embodiments, further comprising: an end plate, the end plate is arranged at both ends of the control pipe; a fastener, the end plate is installed on the control pipe through the fastener.

[0009] In some embodiments, further comprising: a first mounting groove, the first mounting groove is arranged at the end of the control pipe; a special-shaped sealing ring, the special-shaped sealing ring is arranged in the first mounting groove, and an adhesive is arranged between the special-shaped sealing ring and the first mounting groove; a second mounting groove, the second mounting groove is arranged on the end plate and is matched with the special-shaped sealing ring.

[0010] In some embodiments, further comprising: a third mounting groove, the third mounting groove is arranged on the control pipe; a sealing bag, the sealing bag is arranged in the third mounting groove, and an adhesive is arranged between the sealing bag and the third mounting groove, the control pipe is provided with an inflation port communicating with the sealing bag; a fourth mounting groove, the fourth mounting groove is arranged on the partition plate, and the fourth mounting groove is matched with the sealing bag.

[0011] In some embodiments, the water inlet head and the water outlet head each comprise: a first pipeline, the first pipeline is mounted on the control pipe; a control valve, the control valve is mounted on the connecting pipe; a second pipeline, the second pipeline is mounted on the control valve.

[0012] The technical scheme of the present application provides a temperature control device for lithium batteries, which comprises: two control pipes, the two control pipes are arranged at intervals; a partition plate, the partition plate is arranged inside the control pipes and is used to separate the control pipes into a water inlet area and a water outlet area; a water inlet head, the water inlet head is arranged on the control pipe and communicates with the water inlet area; a water outlet head, the water outlet head is arranged on the control pipe and communicates with the water outlet area; and a plurality of connecting pipes, the plurality of connecting pipes are arranged between the two control pipes, one end of the connecting pipe is connected to the water inlet area of one control pipe, and the other end of the connecting pipe is connected to the water outlet area of the other control pipe. The temperature control liquid flows from the water inlet head of the two control pipes into the water inlet area, then flows into the connecting pipe, and finally flows out of the water outlet area of the other control pipe, thereby achieving temperature control of the lithium batteries. The flow directions of the two adjacent connecting pipes are opposite, thereby avoiding the gradual decrease of the temperature control efficiency along the flow direction. Through the above steps, the flow directions of the temperature control liquid in the two connecting pipes are opposite, thereby avoiding the problem of gradual decrease of the temperature control efficiency along the flow direction of the temperature control liquid, and the temperature control efficiency is more evenly distributed, and the temperature distribution on the lithium batteries is more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings:

[0014] Figure 1 It is a three-dimensional structure schematic diagram of a temperature control device for lithium batteries in an embodiment of the present application;

[0015] Figure 2A sectional view of a temperature control device for a lithium battery according to an embodiment of the present application;

[0016] Figure 3 A sectional view of a temperature control device for a lithium battery according to an embodiment of the present application; Figure 2 A partial enlarged view of part A in the figure;

[0017] Figure 4 A sectional view of a temperature control device for a lithium battery according to another embodiment of the present application;

[0018] Figure 5 A sectional view of a temperature control device for a lithium battery according to another embodiment of the present application; Figure 4 A partial enlarged view of part B in the figure.

[0019] In the figure: control pipe 1, water outlet head 2, water inlet head 3, end plate 4, connecting pipe 5, heat-conducting wing 6, first mounting groove 7, partition plate 8, first pipe 9, control valve 10, second pipe 11, sealing bag 12, fourth mounting groove 13, third mounting groove 14, fastener 15, second mounting groove 16, special-shaped sealing ring 17. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0021] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0022] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or can have a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can have a middle element.

[0023] In addition, the descriptions involving "first", "second", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0024] Referring to Figure 1 and Figure 2 The present application proposes a temperature control device for lithium battery, comprising: two control pipes 1, the two control pipes 1 are arranged at intervals; a partition plate 8, the partition plate 8 is arranged in the control pipe 1, and is used for separating the control pipe 1 into a water inlet area and a water outlet area; a water inlet head 3, the water inlet head 3 is arranged in the control pipe 1 and communicates with the water inlet area; a water outlet head 2, the water outlet head 2 is arranged in the control pipe 1 and communicates with the water outlet area; and a plurality of connecting pipes 5, the plurality of connecting pipes 5 are arranged between the two control pipes 1, one end of the connecting pipe 5 is connected to the water inlet area of one control pipe 1, and the other end of the connecting pipe 5 is connected to the water outlet area of the other control pipe 1.

[0025] Among them, the two control pipes 1 and the partition plate 8 constitute a core component of the temperature control device for lithium battery. The two control pipes 1 are each provided with independent water inlet area and water outlet area, so that the flow direction of the liquid in the plurality of connecting pipes 5 can be different, avoiding that due to the unidirectional flow of the liquid, the temperature difference between the liquid far away from the water inlet area and the liquid in the water inlet area is too large, resulting in uneven temperature control efficiency, thereby causing uneven temperature distribution of the lithium battery. The plurality of connecting pipes 5 are straight pipes, which are used for reducing the cooling path, thereby avoiding that the temperature difference of the liquid in the connecting pipe 5 is too large. For the connecting pipes 5 on one control pipe 1, one connecting pipe 5 is connected to the water inlet area on the control pipe 1, and the connecting pipe 5 adjacent thereto is connected to the water outlet area on the control pipe 1. Such interval arrangement is conducive to making the temperature control efficiency more evenly distributed.

[0026] Specifically, the temperature control liquid flows from the water inlet head 3 of the two control pipes 1 into the water inlet area, and then flows into the connecting pipe 5, and finally flows out from the water outlet area of the other control pipe 1, thereby realizing the temperature control of the lithium battery. The flow directions of the two adjacent connecting pipes 5 are opposite, thereby avoiding that the temperature control efficiency gradually decreases with the flow direction. Through the above steps, the flow directions of the temperature control liquid in the two connecting pipes 5 can be opposite, avoiding the problem that the temperature control efficiency gradually decreases with the flow direction of the temperature control liquid, thereby making the temperature control efficiency more evenly distributed, and making the temperature distribution on the lithium battery more uniform.

[0027] Referring to Figure 1As shown in some embodiments, further comprising: a plurality of heat-conducting wings 6, which are arranged at intervals on one side of the connecting pipe 5. Specifically, since the connecting pipe 5 is welded to the water inlet area and the water outlet area, there is a gap between two adjacent connecting pipes 5, and the heat-conducting wing 6 is arranged between the two adjacent connecting pipes 5, so that the temperature of the lithium battery can be better controlled.

[0028] As shown in Figure 1 , Figure 4 and Figure 5 As shown in some embodiments, further comprising: an end plate 4 arranged at both ends of the control pipe 1; and a fastener 15 used to detachably mount the end plate 4 to the control pipe 1. The arrangement of the end plate 4 allows the partition plate 8 to be better mounted to the inside of the control pipe 1.

[0029] As shown in Figure 1 , Figure 4 and Figure 5 As shown in some embodiments, further comprising: a first mounting groove 7 arranged at the end of the control pipe 1; a special-shaped sealing ring 17 arranged in the first mounting groove 7, with an adhesive arranged between the special-shaped sealing ring 17 and the first mounting groove 7; and a second mounting groove 16 arranged on the end plate 4 and adapted to the special-shaped sealing ring 17. The special-shaped sealing ring 17 ensures the sealing line between the control pipe 1 and the end plate 4, avoiding liquid leakage.

[0030] As shown in Figure 1 , Figure 2 and Figure 3 As shown in some embodiments, further comprising: a third mounting groove 14 arranged on the control pipe 1; a sealing bag 12 arranged in the third mounting groove 14, with an adhesive arranged between the sealing bag 12 and the third mounting groove 14, and the control pipe 1 being provided with an inflation port communicating with the sealing bag 12; and a fourth mounting groove 13 arranged on the partition plate 8 and adapted to the sealing bag 12. The sealing bag 12 realizes the sealing between the control pipe 1 and the partition plate 8. Since the connecting surface between the control pipe 1 and the partition plate 8 is relatively long, the use of a static sealing ring is prone to leakage, and the use of the inflatable sealing bag 12 can achieve better sealing effect. The partition plate 8 is provided with a heat preservation layer, which is used to avoid excessive heat exchange between the water inlet area and the water outlet area.

[0031] As shown in Figure 1 and Figure 2As shown, in some embodiments, the water inlet head 3 and the water outlet head 2 each comprise: a first pipe 9, which is installed on the control pipe 1; a control valve 10, which is installed on the connecting pipe 5; and a second pipe 11, which is installed on the control valve 10. The second pipe 11 is used to introduce a temperature control liquid flow, and the control valve 10 is used to control the flow.

[0032] The above only describes some or preferred embodiments of the present application, and neither the text nor the drawings can limit the scope of protection of the present application. Any equivalent structural transformation using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the present application.

Claims

1. A temperature control device for a lithium battery, characterized by, The utility model relates to a kind of water heating device, including: Two control pipes (1), two The control pipe (1) is spaced apart; Partition plate (8), The partition plate (8) is set to the inside of The control pipe (1), for The control pipe (1) is separated into water inlet area and water outlet area; Water inlet head (3), The water inlet head (3) is set to The control pipe (1), and it is communicated The water inlet area; Water outlet head (2), The water outlet head (2) is set to The control pipe (1), and it is communicated The water outlet area; Multiple connecting pipes (5), multiple The connecting pipe (5) is set between two The control pipe (1), one end of The connecting pipe (5) is connected the water inlet area of one The control pipe (1), the other end of The connecting pipe (5) is connected the water outlet area of another The control pipe (1).

2. The temperature control device for a lithium battery according to claim 1, wherein Further including: Multiple heat-conducting wings (6), multiple The heat-conducting wing (6) is spaced apart and set to one side of The connecting pipe (5).

3. The temperature control device for a lithium battery according to claim 1, wherein Further including: End plate (4), The end plate (4) is set to both ends of The control pipe (1); Fastener (15), The end plate (4) is installed to The control pipe (1) by The fastener (15).

4. The temperature control device for a lithium battery according to claim 3, wherein Further including; First mounting groove (7), The first mounting groove (7) is set to the end of The control pipe (1); Special-shaped sealing ring (17), The special-shaped sealing ring (17) is set to The first mounting groove (7), and adhesive is set between The special-shaped sealing ring (17) and The first mounting groove (7); Second mounting groove (16), The second mounting groove (16) is set to The end plate (4), and it is adapted The special-shaped sealing ring (17).

5. The temperature control device for a lithium battery according to claim 1, wherein Further including: Third mounting groove (14), The third mounting groove (14) is set to The control pipe (1); Sealing capsule (12), The sealing capsule (12) is set to The third mounting groove (14), and adhesive is set between The sealing capsule (12) and The third mounting groove (14), The control pipe (1) is provided with inflation port communicated The sealing capsule (12); Fourth mounting groove (13), The fourth mounting groove (13) is set to The partition plate (8), and it is adapted The sealing capsule (12).

6. The temperature control device for a lithium battery according to claim 1, wherein The water inlet head (3) and The water outlet head (2) all include: First pipeline (9), The first pipeline (9) is installed to The control pipe (1); Control valve (10), The control valve (10) is installed to The connecting pipe (5); Second pipeline (11), The second pipeline (11) is installed to The control valve (10).

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