Combined lithium ion battery cell group with good heat dissipation effect

Abstract

The utility model relates to the technical field of lithium ion battery cell groups, in particular to a combined lithium ion battery cell group with a good heat dissipation effect, which comprises a lithium ion battery cell group main body, and a heat dissipation mounting plate is arranged below the lithium ion battery cell group main body. A supporting bulge, a water cooling pipe mounting groove and a lithium ion battery cell group mounting groove are integrally formed in the heat dissipation mounting plate through stamping, a lithium ion battery cell group main body is clamped and mounted in the lithium ion battery cell group mounting groove, a water cooling pipe is clamped and mounted in the water cooling pipe mounting groove, and a cover plate and a bottom plate are respectively clamped above and below the heat dissipation mounting plate. And a positioning bulge with a square hole is formed on the cover plate through stamping. The combined lithium ion battery cell group with the good heat dissipation effect is mounted on a heat dissipation structure, the cover plate and the bottom plate are arranged above and below the heat dissipation mounting plate, the combined lithium ion battery cell group is used for mounting and positioning treatment of air cooling and water cooling structures, meanwhile, the overall occupied space is small, mounting and arrangement are easy, and efficient heat dissipation treatment of the combined lithium ion battery cell group is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium-ion battery cell groups, in particular to a combined lithium-ion battery cell group with good heat dissipation effect. Background Art

[0002] Combined lithium-ion battery packs utilize specialized structural design and assembly techniques to combine multiple lithium-ion cells in series, parallel, or both, creating a battery system with higher voltage, greater capacity, or specialized electrical characteristics. These systems are primarily used to provide higher voltage or greater capacity power output to meet the needs of various electronic devices and applications such as electric vehicles. Proper thermal management of these combined lithium-ion battery packs is crucial for maintaining battery performance and extending battery life.

[0003] Existing modular lithium-ion battery packs usually adopt active (such as liquid cooling system) or passive (such as heat sink) thermal management solutions, but the heat dissipation structure occupies a large space. If the installation space is limited, it will affect the layout of the heat dissipation structure. Utility Model Content

[0004] The purpose of the present invention is to provide a combined lithium-ion battery pack with good heat dissipation effect, so as to solve the problem raised in the above background technology that the heat dissipation structure of the combined lithium-ion battery pack on the market currently occupies a large space and, if the installation space is limited, it will affect the arrangement of the heat dissipation structure.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a combined lithium-ion battery cell group with good heat dissipation effect, comprising a lithium-ion battery cell group main body, a heat dissipation mounting plate provided below the lithium-ion battery cell group main body, and a support protrusion, a water-cooling pipe mounting groove and a lithium-ion battery cell group mounting groove formed integrally on the heat dissipation mounting plate by stamping, and the lithium-ion battery cell group main body is snap-fitted and installed in the lithium-ion battery cell group mounting groove, a water-cooling pipe is snap-fitted and installed in the water-cooling pipe mounting groove, a cover plate and a bottom plate are respectively snap-fitted above and below the heat dissipation mounting plate, and a positioning protrusion with a square hole is stamped on the cover plate, and the positioning protrusion corresponds to the position of the lithium-ion battery cell group main body, a heat sink is snap-fitted and installed in the square hole of the positioning protrusion, and a heat sink is installed on the heat sink.

[0006] Preferably, the bottom of the heat sink is fixed to the lithium-ion battery cell group body by bonding with thermally conductive adhesive.

[0007] Preferably, the supporting protrusions are parallel to each other, and the cross section of the supporting protrusion is a trapezoidal structure, and the supporting protrusion is supported below the main body of the lithium-ion battery cell group.

[0008] Preferably, the openings of the water cooling pipe installation groove and the lithium ion battery pack installation groove face downward and upward respectively, the water cooling pipe installation groove is arranged at the outer circle position of the lithium ion battery pack installation groove, and the water cooling pipe installation grooves are connected to each other.

[0009] Preferably, protruding structures for fastening and engaging with the water-cooling pipes are respectively provided at positions corresponding to the opposite ends of the heat dissipation mounting plate, the cover plate and the base plate.

[0010] Preferably, the bottom of the cover plate is in close contact with the upper end of the lithium-ion battery cell group body, and the size of the positioning protrusion is smaller than the size of the lithium-ion battery cell group body.

[0011] Preferably, the bottom of the base plate is provided with heat dissipation protrusions at even intervals by stamping, and the tops of the heat dissipation protrusions are tightly supported on the bottom of the heat dissipation mounting plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the combined lithium-ion battery pack with good heat dissipation effect is installed on the heat dissipation structure, and a cover plate and a bottom plate are arranged above and below the heat dissipation mounting plate for installation and positioning of air-cooling and water-cooling structures. At the same time, the overall space occupied is small, and it is easy to install and arrange, thereby achieving efficient heat dissipation of the combined lithium-ion battery pack. The combined lithium-ion battery pack with good heat dissipation effect arranges water-cooling pipes between the combined lithium-ion battery packs to efficiently dissipate heat from the outer ring of the lithium-ion battery pack, which not only ensures efficient heat dissipation function but also avoids the problem of large space occupied by the lithium-ion battery pack after the heat dissipation structure is installed. At the same time, heat is dissipated by heat sinks and heat dissipation fans above the lithium-ion battery pack, and heat dissipation protrusions below assist in heat dissipation, thereby improving the installation strength of the lithium-ion battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a side view of a combined lithium-ion battery pack with good heat dissipation effect according to the utility model;

[0014] Figure 2 This is a side view of the connection between the main body of a combined lithium-ion battery pack with good heat dissipation effect and a heat dissipation mounting plate of the utility model;

[0015] Figure 3 This is a schematic diagram of the bottom structure of a heat dissipation mounting plate of a combined lithium-ion battery pack with good heat dissipation effect according to the present invention;

[0016] Figure 4 This is a schematic diagram of the cover structure of a combined lithium-ion battery pack with good heat dissipation effect in the utility model;

[0017] Figure 5 This is a top view of the connection between a combined lithium-ion battery cell group body with good heat dissipation effect and a heat dissipation mounting plate of the utility model.

[0018] In the figure: 1. Lithium-ion battery cell assembly body; 2. Heat sink; 201. Cooling fan; 3. Heat dissipation mounting plate; 301. Support protrusion; 302. Water-cooling pipe mounting groove; 303. Lithium-ion battery cell assembly mounting groove; 4. Cover plate; 401. Positioning protrusion; 5. Bottom plate; 501. Heat dissipation protrusion; 6. Water-cooling pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-5The utility model provides a technical solution: a combined lithium-ion battery pack with good heat dissipation effect, comprising a lithium-ion battery pack main body 1, a heat dissipation mounting plate 3 is provided below the lithium-ion battery pack main body 1, and the heat dissipation mounting plate 3 is integrally formed by stamping into a supporting protrusion 301, a water-cooling pipe mounting groove 302 and a lithium-ion battery pack mounting groove 303, the supporting protrusions 301 are parallel to each other, and the cross-section of the supporting protrusions 301 is a trapezoidal structure, and the supporting protrusions 301 are supported below the lithium-ion battery pack main body 1, this structure can support and stabilize the lithium-ion battery pack main body 1 through the supporting protrusions 301, play a role in shock-absorbing installation of the lithium-ion battery pack main body 1, and the lithium-ion battery pack main body 1 is snap-fitted and installed in the lithium-ion battery pack mounting groove 3 03, a water-cooling pipe 6 is mounted in the water-cooling pipe mounting groove 302, and a cover plate 4 and a bottom plate 5 are respectively mounted on the upper and lower parts of the heat dissipation mounting plate 3. The openings of the water-cooling pipe mounting groove 302 and the lithium-ion battery group mounting groove 303 are respectively facing downward and upward. The water-cooling pipe mounting groove 302 is arranged at the outer circle position of the lithium-ion battery group mounting groove 303, and the water-cooling pipe mounting grooves 302 are interconnected. This structure enables the lithium-ion battery group main body 1 and the water-cooling pipe 6 to be installed in different positions. When the lithium-ion battery group main body 1 is water-cooled through the water-cooling pipe 6 under the heat conduction of the heat dissipation mounting plate 3, it can avoid the damage of the water-cooling pipe 6 that may affect the lithium-ion battery group main body 1. At the same time, the lithium-ion battery group main body 1 at various parts can be cooled by the water-cooling pipe 6. The cooling liquid circulating inside is cooled, and the corresponding positions of the opposite ends of the heat dissipation mounting plate 3, the cover plate 4 and the bottom plate 5 are respectively provided with raised structures that are fastened and clamped with the water-cooling pipe 6. This structure realizes the installation and positioning processing of the lithium-ion battery cell group main body 1 through the mutual clamping between the heat dissipation mounting plate 3, the cover plate 4 and the bottom plate 5. The water-cooling pipe 6 can be connected to the outside through the raised parts at the opposite ends of the heat dissipation mounting plate 3, the cover plate 4 and the bottom plate 5, so that the water-cooling pipe 6 is connected to the existing water-cooling cooling structure for cooling and circulating use of the coolant, and a positioning protrusion 401 with a square hole is formed on the cover plate 4 by stamping, and the positioning protrusion 401 corresponds to the position of the lithium-ion battery cell group main body 1, and the bottom of the cover plate 4 is tightly connected to the upper end of the lithium-ion battery cell group main body 1. Close contact fit, and the size of the positioning protrusion 401 is smaller than the size of the lithium-ion battery pack main body 1. The bottom of the bottom plate 5 is evenly spaced by stamping and provided with heat dissipation protrusions 501, and the top of the heat dissipation protrusion 501 is tightly supported on the bottom of the heat dissipation mounting plate 3. This structure seals and fixes the bottom of the heat dissipation mounting plate 3 through the bottom plate 5, and cooperates with heat dissipation through the heat dissipation protrusion 501. This structure can fix the cover plate 4 to the heat dissipation mounting plate 3, install the lithium-ion battery pack main body 1 firmly, and allow the heat sink 2 to be firmly installed relative to the lithium-ion battery pack main body 1 through the cover plate 4, thereby achieving efficient cooling of the lithium-ion battery pack main body 1. The heat sink 2 is snap-fitted and installed in the square hole of the positioning protrusion 401, and a heat dissipation fan 201 is installed on the heat sink 2.The bottom of the heat sink 2 is fixed to the lithium-ion battery pack body 1 with thermally conductive adhesive. This structure allows the heat sink 2 to conduct the heat generated by the charging and discharging of the lithium-ion battery pack body 1 to the outside of the cover 4, and the heat is dissipated by the heat dissipation fan 201. The heat dissipation fan 201 is an existing heat dissipation fan structure and is managed by the thermal management system.

[0021] Working principle: When using the combined lithium-ion battery pack with good heat dissipation effect, first, the lithium-ion battery pack body 1 is directly installed on the heat dissipation mounting plate 3 through the lithium-ion battery pack mounting groove 303, and the support protrusion 301 plays a shock-absorbing support role for the lithium-ion battery pack body 1, and the water-cooling pipe 6 is installed below the heat dissipation mounting plate 3 through the water-cooling pipe mounting groove 302. While the water-cooling pipe 6 dissipates heat for the lithium-ion battery pack body 1, it avoids the lithium-ion battery pack body 1 and the water-cooling pipe 6 being in the same space, preventing the water-cooling pipe 6 from being Problems such as damage may affect the use of the lithium-ion battery pack main body 1. The cover plate 4 and the bottom plate 5 are respectively clamped on the upper and lower ends of the heat dissipation mounting plate 3, so that the heat sink 2 is installed on the cover plate 4 through the positioning protrusion 401, and the heat sink 2 is bonded to the lithium-ion battery pack main body 1 through thermal conductive adhesive. After the lithium-ion battery pack main body 1 is heat-conducted through the heat sink 2, the heat dissipation fan 201 dissipates heat from the heat sink 2. The bottom plate 5 assists in heat dissipation through the heat dissipation protrusion 501 and ensures the overall strength of the lithium-ion battery pack main body 1, thereby completing a series of tasks.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined lithium-ion battery pack with good heat dissipation effect, comprising a lithium-ion battery pack body (1), characterized in that: A heat dissipation mounting plate (3) is provided below the lithium-ion battery pack main body (1), and a support protrusion (301), a water-cooling pipe mounting groove (302), and a lithium-ion battery pack mounting groove (303) are integrally formed on the heat dissipation mounting plate (3) by stamping, and the lithium-ion battery pack main body (1) is snap-fitted and mounted in the lithium-ion battery pack mounting groove (303), and a water-cooling pipe (6) is snap-fitted and mounted in the water-cooling pipe mounting groove (302). A cover plate (4) and a bottom plate (5) are snap-fitted on the upper and lower parts of the heat dissipation mounting plate (3), respectively, and a positioning protrusion (401) with a square hole is stamped on the cover plate (4), and the positioning protrusion (401) corresponds to the position of the lithium-ion battery pack main body (1), a heat sink (2) is snap-fitted and mounted in the square hole of the positioning protrusion (401), and a heat sink (2) is mounted on the heat sink (2).

2. The combined lithium-ion battery pack with good heat dissipation effect according to claim 1, characterized in that: The bottom of the heat sink (2) is fixed to the lithium-ion battery pack main body (1) by bonding with heat-conducting adhesive.

3. The combined lithium-ion battery pack with good heat dissipation effect according to claim 1, characterized in that: The supporting protrusions (301) are parallel to each other, and the cross section of the supporting protrusions (301) is a trapezoidal structure, and the supporting protrusions (301) are supported below the lithium-ion battery cell group main body (1).

4. The combined lithium-ion battery pack with good heat dissipation effect according to claim 1, characterized in that: The openings of the water cooling pipe installation groove (302) and the lithium ion battery pack installation groove (303) are respectively oriented downward and upward, the water cooling pipe installation groove (302) is arranged at the outer circle position of the lithium ion battery pack installation groove (303), and the water cooling pipe installation grooves (302) are interconnected.

5. The combined lithium-ion battery pack with good heat dissipation effect according to claim 1, characterized in that: Positions corresponding to the two opposite ends of the heat dissipation mounting plate (3), the cover plate (4) and the base plate (5) are respectively provided with protruding structures that are fastened and clamped with the water cooling pipe (6).

6. The combined lithium-ion battery pack with good heat dissipation effect according to claim 1, characterized in that: The bottom of the cover plate (4) is in close contact with the upper end of the lithium-ion battery pack body (1), and the size of the positioning protrusion (401) is smaller than the size of the lithium-ion battery pack body (1).

7. The combined lithium-ion battery pack with good heat dissipation effect according to claim 1, characterized in that: The bottom of the base plate (5) is provided with heat dissipation protrusions (501) at even intervals by stamping, and the tops of the heat dissipation protrusions (501) are tightly supported on the bottom of the heat dissipation mounting plate (3).

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