Improved water-cooled battery

Abstract

The utility model relates to the field of new energy batteries, in particular to an improved water-cooling battery which comprises a battery pack and a water-cooling module, the water-cooling module comprises at least two groups of water-cooling pipes, each water-cooling pipe comprises two groups of positioning sections which are arranged in parallel, and the bottoms of the two positioning sections are connected through a bearing section, so that the water-cooling pipes are arranged in a U shape; the positioning sections of every two adjacent water-cooling pipes are communicated through a connecting section and then inserted into a mounting cavity in the bottom of the battery pack from bottom to top, the positioning sections of the water-cooling pipes are matched to clamp and fix the battery pack, and the bearing sections of the water-cooling pipes bear the battery pack from bottom to top. The water cooling device can synchronously cool the inside and the outside of the battery, and the cooling efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of new energy batteries, in particular to an improved water-cooled battery. Background Art

[0002] With the development of lithium-ion battery technology, large-capacity batteries have become an inevitable trend in the development of the industry. The batteries currently on the market cannot be charged and discharged at ultra-large rates. The reason is that the temperature of the battery will rise sharply when it is charged and discharged at large currents. For example, when the temperature rises to above 80°C, if it is not cooled down in time, carbonization and other phenomena will occur in the internal components of the battery, which will have a fatal impact on the performance of the battery.

[0003] In order to cool down the battery in time, as described in patent number "CN204424404U", the temperature of the battery cell is lowered by heat transfer between the tube sleeve and the coolant to make the working environment of the entire battery box consistent. Although this water cooling method can have a certain cooling effect, it can only cool the battery externally. The internal temperature of the battery core is difficult to be quickly reduced, and the cooling efficiency is low, so it needs to be solved urgently. Summary of the invention

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides an improved water-cooled battery. The utility model can cool the inside and outside of the battery synchronously by water, thereby greatly improving the cooling efficiency.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An improved water-cooled battery comprises a battery pack and a water-cooling module. The water-cooling module comprises at least two groups of water-cooling tubes. Each water-cooling tube comprises two groups of positioning sections arranged in parallel. The bottoms of the two positioning sections are connected by a supporting section so that the water-cooling tubes are arranged in a U shape. After the positioning sections of two adjacent water-cooling tubes are connected by a connecting section, they are inserted into the installation cavity at the bottom of the battery pack from bottom to top. The positioning sections of each water-cooling tube cooperate to clamp and fix the battery pack, and the supporting sections of each water-cooling tube support the battery pack from bottom to top.

[0007] As a further solution of the utility model: the supporting section and the positioning section are both flat tube bodies, and the two adjacent water-cooling tubes are arranged alternately left and right, so that the positioning sections of the two water-cooling tubes in the installation cavity are arranged side by side, and after the side-by-side arrangement, they match the size of the installation cavity.

[0008] As a further solution of the utility model: a water inlet and a water outlet are respectively provided on the positioning sections at both ends of the water cooling module.

[0009] As a further solution of the utility model: protective foam is arranged at the contact surface between the positioning section and the supporting section and the battery pack.

[0010] As a further solution of the utility model: after the water cooling module and the installation cavity of the battery pack are inserted and positioned, a fixing belt is arranged on the outer ring of the battery pack to bind and fix the water cooling module and the battery pack.

[0011] As a further solution of the utility model: the battery pack includes a core group arranged in the outer shell, the core group includes at least two groups of cores, the positive pole ears of each core are connected by a positive electrode, the negative pole ears of each core are connected by a negative electrode, and the installation cavity is arranged between two adjacent cores.

[0012] As a further solution of the utility model: at least two groups of installation cavities are evenly opened in the winding core group, and the number of water cooling modules corresponds to the number of installation cavities.

[0013] As a further solution of the utility model: a wear-resistant tape is attached to the outer side of the winding core group to avoid friction of the water cooling module.

[0014] As a further solution of the utility model: protective plates are arranged on the front and back sides of the battery pack, and positioning grooves are opened on the surfaces of the protective plates for the positioning sections of the water cooling module to be clamped and positioned.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model opens an installation cavity inside the battery pack so that the water cooling module can be inserted into the battery pack, and the inside and outside of the battery are cooled synchronously by water, which greatly improves the cooling efficiency; the multiple groups of water cooling pipes of the water cooling module can simultaneously cool multiple battery packs, and each battery pack can be clamped and fixed by the positioning section, and the battery pack can be supported and positioned from bottom to top by the supporting section. After installation, the water cooling module can simultaneously cool and fix the battery pack.

[0017] 2. The water-cooling tube of the utility model is configured as a flat tube body, which has higher stability after installation. Its flat design enables the positioning sections to be arranged in a single outer and double inner configuration inside and outside the battery, thereby maximizing the contact area between the water-cooling tube and the inside of the battery pack and improving the cooling effect; the cooling water is circulated through the external water inlet and outlet to improve the heat exchange efficiency.

[0018] 3. After the water cooling module is installed, the utility model can install protective plates at both ends of the battery pack, and the battery pack and the water cooling module are tied and fixed by fixing belts. The arrangement of protective plates, protective foam and wear-resistant tape avoids unnecessary damage to the battery during the installation and fixing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the water cooling module in the utility model.

[0021] Figure 3 It is a structural schematic diagram of the battery pack in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the winding core group in the utility model.

[0023] In the figure:

[0024] 1. Battery pack; 11. Casing; 12. Core pack;

[0025] 121, mounting cavity; 122, winding core; 123, positive electrode tab; 124, negative electrode tab;

[0026] 125. Positive electrode; 126. Negative electrode; 127. Wear-resistant tape;

[0027] 2. Water cooling module; 21. Positioning section; 22. Supporting section;

[0028] 23. Connecting section; 24. Water inlet; 25. Water outlet;

[0029] 3. Fixing strap. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figures 1 to 4 In an embodiment of the utility model, an improved water-cooled battery includes a battery pack 1 and a water-cooling module 2. The battery pack 1 can be stacked and arranged in multiple groups. Each battery pack 1 is clamped and fixed by two groups of protective plates. After the protective plates clamp the battery pack 1, their outer rings are tied and fixed in the horizontal direction by fixing belts 3.

[0032] The battery pack 1 includes a core group 12 and a shell 11 arranged on the core group 12, and the bottom of the shell 11 is open. The core group 12 includes at least two groups of cores 122, and the positive pole tabs 123 of each core 122 are connected by a positive electrode 125, preferably welded and fixed; the negative pole tabs 124 of each core 122 are connected by a negative electrode 126, preferably welded and fixed, and there is an installation cavity 121 between the two cores 122 for inserting the water cooling module 2.

[0033] The water cooling module 2 includes multiple groups of U-shaped water cooling pipes, the pipe body of the water cooling pipe is a flat pipe, and the water cooling pipe has three sections, including two parallel positioning sections 21 and a supporting section 22 that connects the bottoms of the two positioning sections 21. After the positioning sections 21 of two adjacent groups of water cooling pipes are arranged side by side, their tops are connected through the connecting section 23, so that the two adjacent groups of water cooling pipes are arranged in a W shape. During installation, the connecting section 23 and the positioning sections 21 of the two groups of water cooling pipes connected thereto are inserted into the installation cavity 121, and correspond to the size of the installation cavity 121, so as to be plugged and positioned with the installation cavity 121.

[0034] The protective plate may be provided with a positioning groove along the vertical direction for the positioning section 21 outside the installation cavity 121 to be inserted and positioned, and the positioning section 21 is simultaneously tied and fixed when the fixing belt 3 is tied. The positioning section 21 outside the installation cavity 121 can clamp and fix the battery pack 1 under cooperation, and after the water cooling module 2 is installed in place, the supporting section 22 just abuts against the bottom surface of the winding core group 12, thereby supporting and positioning the battery pack 1.

[0035] The water cooling module 2 has water inlets and outlets on the positioning sections at both ends to allow cooling water to circulate and enhance the cooling effect. During installation, the surfaces of the positioning section 21, the supporting section 22, and the connecting section 23 are all provided with protective foam to avoid direct contact with the battery pack 1 and improve the protective effect. At the same time, the outer ring of the winding core group 12 is provided with wear-resistant tape 127 to avoid friction with the water cooling module 2 during installation.

[0036] During production, the housing 11 and the water cooling module 2 are preferably integrally stamped and formed.

[0037] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0038] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0039] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0040] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0041] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. An improved water-cooled battery, characterized in that: The invention comprises a battery pack (1) and a water cooling module (2), wherein the water cooling module (2) comprises at least two groups of water cooling pipes, each of which comprises two groups of positioning sections (21) arranged in parallel, the bottoms of the two positioning sections (21) being connected by a supporting section (22) so that the water cooling pipes are arranged in a U shape, and after the positioning sections (21) of two adjacent water cooling pipes are connected by a connecting section (23), they are inserted from bottom to top into a mounting cavity (121) at the bottom of the battery pack (1), the positioning sections (21) of each water cooling pipe cooperate to clamp and fix the battery pack (1), and the supporting sections (22) of each water cooling pipe support the battery pack (1) from bottom to top.

2. An improved water-cooled battery according to claim 1, characterized in that: The supporting section (22) and the positioning section (21) are both flat tube bodies, and two adjacent water cooling tubes are arranged alternately left and right, so that the positioning sections (21) of the two water cooling tubes in the installation cavity (121) are arranged side by side, and after being arranged side by side, the size of the positioning sections matches the installation cavity (121).

3. An improved water-cooled battery according to claim 2, characterized in that: The positioning sections (21) at both ends of the water cooling module (2) are respectively provided with a water inlet (24) and a water outlet (25).

4. An improved water-cooled battery according to claim 2, characterized in that: Protective foam is arranged at the contact surfaces of the positioning section (21) and the supporting section (22) with the battery pack (1).

5. An improved water-cooled battery according to any one of claims 1 to 4, characterized in that: After the water cooling module (2) and the installation cavity (121) of the battery pack (1) are plugged and positioned, a fixing belt (3) is arranged on the outer ring of the battery pack (1) to bind and fix the water cooling module (2) and the battery pack (1).

6. An improved water-cooled battery according to any one of claims 1 to 4, characterized in that: The battery pack (1) comprises a winding core group (12) arranged in a housing (11), the winding core group (12) comprises at least two groups of winding cores (122), the positive pole tabs (123) of each winding core (122) are connected via a positive electrode (125), the negative pole tabs (124) of each winding core (122) are connected via a negative electrode (126), and the mounting cavity (121) is arranged between two adjacent winding cores (122).

7. An improved water-cooled battery according to claim 6, characterized in that: At least two groups of installation cavities (121) are evenly arranged in the winding core group (12), and the number of the water cooling modules (2) corresponds to the number of the installation cavities (121).

8. An improved water-cooled battery according to claim 6, characterized in that: A wear-resistant tape (127) is attached to the outer side of the winding core group (12) to prevent friction with the water cooling module (2).

9. The improved water-cooled battery according to claim 6, characterized in that: Protective plates are arranged on the front and back sides of the battery pack (1), and positioning grooves are provided on the surfaces of the protective plates for the positioning sections (21) of the water cooling module (2) to be engaged and positioned.

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