L-shaped radiator structure of household energy storage battery PACK

Abstract

The utility model discloses an L-shaped radiator structure of a household energy storage battery PACK, which comprises a PACK cladding, battery modules and L-shaped radiators, at least one group of L-shaped radiators is arranged in the PACK cladding, each group of L-shaped radiators is provided with the battery modules, each L-shaped radiator is of an L-shaped frame body structure consisting of a radiating support sheet and a radiating side sheet, and the radiating support sheet and the radiating side sheet are arranged on the PACK cladding. Heat dissipation copper pipes are embedded in the heat dissipation supporting piece and the heat dissipation side pieces, heat dissipation tooth sets composed of a plurality of heat dissipation teeth are installed on the outer side faces of the heat dissipation side pieces, sealing ring grooves are formed in the portions, on the sides of the heat dissipation tooth sets, of the heat dissipation side pieces, and cover shell sealing rings are installed in the sealing ring grooves. The battery module radiator has the beneficial effects that a radiator structure for directly radiating the battery module is researched and developed, the defects in the radiating aspect of the battery module at the present stage are overcome, the battery module can be simultaneously radiated from the side surface and the bottom after the L-shaped radiator is coupled with the battery module, the radiating area is increased, and the radiating efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack heat dissipation, and in particular to an L-shaped heat sink structure for a household energy storage battery pack. Background Technology

[0002] In the context of batteries, PACK refers to a battery pack, which includes, but is not limited to, the battery pack casing, battery modules, DC / DC converters, etc. In energy storage batteries, the DC / DC converter acts as a voltage control module. Its main function is to convert the voltage into the required output voltage during charging and discharging. It can increase, decrease, or maintain the voltage. It generates a lot of heat during operation, which causes the temperature to rise. Therefore, it is usually equipped with heat sinks to control the temperature.

[0003] Due to their small size and limited overall design, residential energy storage battery packs lack dedicated heat dissipation structures for battery modules. Some energy storage batteries are equipped with DC / DC converters that have heat sinks. Thermal insulation materials are typically used to separate the DC / DC converter from the battery module to prevent excessive heat loss from the DC / DC converter to the battery compartment, which could lead to abnormally high battery temperatures. Relying solely on natural heat dissipation to control battery temperature is problematic because the thermal insulation performance of the insulation materials is limited and cannot completely prevent heat loss. As a result, the battery often operates at high temperatures, which is detrimental to the overall performance of the battery. Utility Model Content

[0004] The purpose of this invention is to provide an L-shaped heat sink structure for a household energy storage battery pack in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] An L-shaped heat sink structure for a residential energy storage battery PACK includes a PACK casing, a battery module, and an L-shaped heat sink. At least one set of the L-shaped heat sinks is installed inside the PACK casing, and the battery module is installed on each set of the L-shaped heat sinks. The L-shaped heat sink is an L-shaped frame structure composed of heat dissipation support plates and heat dissipation side plates. Heat dissipation copper tubes are embedded on the heat dissipation support plates and heat dissipation side plates. A heat dissipation tooth group composed of several heat dissipation teeth is installed on the outer side of the heat dissipation side plate. A sealing ring groove is provided on the side of the heat dissipation side plate on the side of the heat dissipation tooth group, and a cover sealing ring is installed in the sealing ring groove.

[0007] Furthermore, the L-shaped radiator is provided in two sets arranged vertically, and a vertical support frame is provided between the two sets of L-shaped radiators.

[0008] Furthermore, a bottom thermally conductive adhesive pad is provided between the heat dissipation support and the battery module, and the bottom thermally conductive adhesive pad is adhered to the heat dissipation support.

[0009] Furthermore, a side thermally conductive adhesive pad is provided between the heat dissipation side plate and the battery module, and the side thermally conductive adhesive pad is adhered to the heat dissipation side plate.

[0010] Furthermore, the PACK enclosure consists of a main housing and a cover, which are fixed together by screws.

[0011] Furthermore, the PACK casing has heat dissipation holes on the shell wall near the heat dissipation teeth, and the heat dissipation teeth extend to the outside of the PACK casing through the heat dissipation holes.

[0012] Furthermore, the heat sink is provided with module fixing screw holes, and the bottom of the battery module is fixedly installed to the module fixing screw holes by screws.

[0013] Furthermore, the heat dissipation side plate is provided with cover screw holes, and the cover is fixedly installed onto the cover screw holes by screws.

[0014] Furthermore, the L-shaped radiator is provided in two sets and arranged symmetrically from left to right.

[0015] Furthermore, the L-shaped radiator is integrally molded.

[0016] The beneficial effects are: a heat sink structure that directly dissipates heat from the battery module has been developed, making up for the current shortcomings in heat dissipation of battery modules.

[0017] When coupled with the battery module, the L-shaped heat sink can dissipate heat from both the side and the bottom of the battery module, increasing the heat dissipation area and improving heat dissipation efficiency. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the first embodiment of the L-shaped heat sink structure of the household energy storage battery PACK described in this utility model;

[0019] Figure 2 This is an exploded view of the first embodiment of the L-shaped heat sink structure of the household energy storage battery PACK described in this utility model;

[0020] Figure 3 This is a structural diagram of an L-shaped radiator for a household energy storage battery PACK as described in this utility model.

[0021] Figure 4 This is a structural diagram of the second embodiment of the L-shaped heat sink structure of the household energy storage battery PACK described in this utility model;

[0022] Figure 5 This is an exploded view of the second embodiment of the L-shaped heat sink structure of the household energy storage battery PACK described in this utility model.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1. PACK casing; 101. Main casing; 102. Cover shell; 103. Heat dissipation holes; 2. Vertical support frame; 3. Battery module; 4. L-shaped heat sink; 401. Heat dissipation teeth; 402. Sealing ring groove; 403. Cover shell screw holes; 404. Heat dissipation copper pipe; 405. Module fixing screw holes; 406. Heat dissipation support plate; 407. Heat dissipation side plate; 5. Side thermal conductive pad; 6. Bottom thermal conductive pad; 7. Cover shell sealing ring. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example

[0026] like Figure 1 - Figure 3 As shown, an L-shaped heat sink structure for a residential energy storage battery PACK includes a PACK casing 1, a battery module 3, and an L-shaped heat sink 4.

[0027] The PACK casing 1 contains at least one set of L-shaped heat sinks 4, and each set of L-shaped heat sinks 4 has a battery module 3 installed on it.

[0028] The L-shaped radiator 4 is an L-shaped frame structure composed of heat dissipation support plate 406 and heat dissipation side plate 407. Both heat dissipation support plate 406 and heat dissipation side plate 407 are die-cast heat dissipation plates. Heat dissipation copper pipe 404 is embedded on the heat dissipation support plate 406 and heat dissipation side plate 407. The heat dissipation copper pipe 404 is embedded into the die-cast heat dissipation plates (heat dissipation support plate 406 and heat dissipation side plate 407) by hot pressing process.

[0029] In one embodiment, there are multiple heat dissipation copper pipes 404 embedded in the heat dissipation support 406 and the heat dissipation side plate 407.

[0030] In one embodiment, the L-shaped radiator 4 is integrally formed, or the heat dissipation support 406 and the heat dissipation side plate 407 are integrally formed, for example, they can be integrally die-cast; the heat dissipation copper pipe 404 embedded in the heat dissipation side plate 407 of the heat dissipation support 406 are connected end to end, or they can be the same heat dissipation copper pipe 404.

[0031] In one embodiment, the arrangement of the multiple heat dissipation copper pipes 404 is adapted to the heat density of the battery module 3. For example, if the heat generation of the battery module 3 is low at both ends and high in the middle, the arrangement of the multiple heat dissipation copper pipes 404 will show a trend of high density in the middle and low density at both ends. For example, the heat dissipation copper pipes 404 located in the middle of the heat dissipation support 406 / heat dissipation side plate 407 are arranged closely, or the heat dissipation copper pipes 404 have a large area. The heat dissipation copper pipes 404 located on both sides of the heat dissipation support 406 / heat dissipation side plate 407 are arranged loosely, or the heat dissipation copper pipes 404 have a small area. In one embodiment, the distance between each pair of heat dissipation copper pipes 404 decreases from the middle to both sides, where the middle refers to the middle of the heat dissipation support 406 / heat dissipation side plate 407 and the two sides refer to the two sides of the heat dissipation support 406 / heat dissipation side plate 407. For another example, if the battery module 3 generates heat evenly, the multiple heat dissipation copper pipes 404 will be evenly arranged and of the same size; and so on.

[0032] The outer side of the heat dissipation plate 407 is equipped with a heat dissipation tooth group consisting of several heat dissipation teeth 401. The heat dissipation plate 407 on the side of the heat dissipation tooth group is provided with a sealing ring groove 402. A cover sealing ring 7 is installed in the sealing ring groove 402, which is mainly used to improve the sealing performance and to protect the internal battery module 3.

[0033] In this embodiment, there are two sets of L-shaped heat sinks 4 arranged vertically, and a vertical support frame 2 is provided between the two sets of L-shaped heat sinks 4. The vertical support frame 2 is placed below the top L-shaped heat sink 4 to support the bottom battery module 3 and create a certain gap.

[0034] In this embodiment, a bottom thermally conductive adhesive pad 6 is provided between the heat dissipation support 406 and the battery module 3, and the bottom thermally conductive adhesive pad 6 is adhered to the heat dissipation support 406.

[0035] In this embodiment, a side thermal conductive pad 5 is provided between the heat dissipation side plate 407 and the battery module 3, and the side thermal conductive pad 5 is adhered to the heat dissipation side plate 407.

[0036] In this embodiment, the PACK shell 1 consists of a main shell 101 and a cover 102, which are fixed together by fasteners such as screws.

[0037] In this embodiment, a heat dissipation hole 103 is provided on the shell wall of the PACK shell 1 near the heat dissipation tooth 401. The heat dissipation tooth 401 extends to the outside of the PACK shell 1 through the heat dissipation hole 103 to improve heat dissipation efficiency.

[0038] In this embodiment, the heat sink 406 is provided with module fixing screw holes 405, and the bottom of the battery module 3 is fixedly installed to the module fixing screw holes 405 by screws.

[0039] In this embodiment, the heat dissipation side plate 407 is provided with cover screw holes 403, and the cover 102 is fixedly installed on the cover screw holes 403 by screws to realize the fixation of the L-shaped heat sink 4. Example

[0040] like Figure 3-5 As shown, an L-shaped heat sink structure for a residential energy storage battery PACK consists of a PACK casing 1, a battery module 3, and an L-shaped heat sink 4.

[0041] The difference from Embodiment 1 is that the L-shaped heat sink 4 is provided in two sets and arranged symmetrically from left to right. The heat dissipation teeth 401 of the two sets of L-shaped heat sink 4 extend to the outside through the heat dissipation holes 103 on both sides of the PACK shell 1.

[0042] In one embodiment, the overall outline of the heat dissipation fins 401 is V-shaped and arranged symmetrically on the left and right.

[0043] In one embodiment, the arrangement of heat dissipation teeth 401 is adapted to the heat density of the battery module 3. In areas where the battery module 3 generates a lot of heat, there are more heat dissipation teeth 401, or they are arranged closely together or have a larger area. In areas where the battery module 3 generates a little heat, there are fewer heat dissipation teeth 401, or they are arranged loosely or have a smaller area.

[0044] In one embodiment, the heat dissipation tooth 401 has a bent edge to increase the area of ​​the heat dissipation tooth 401 and enhance the heat dissipation effect; in another embodiment, the heat dissipation tooth 401 with a bent edge is provided in the area of ​​the battery module 3 where the heat generation is high.

[0045] In one embodiment, the heat dissipation denticle 401 is thicker near the heat dissipation support 406 / heat dissipation side plate 407 and thinner away from the heat dissipation support 406 / heat dissipation side plate 407; in another embodiment, the heat dissipation denticle 401 has a larger area near the heat dissipation support 406 / heat dissipation side plate 407 and a smaller area away from the heat dissipation support 406 / heat dissipation side plate 407.

[0046] In the two embodiments described above, the bottom of the L-shaped heat sink 4 is fixed to the battery module 3 through the module fixing screw hole 405. The side thermal conductive silicone pad 5 and the bottom thermal conductive silicone pad 6 are respectively attached to the bottom and side surfaces of the L-shaped heat sink 4 and the battery module 3 with adhesive. The cover sealing ring 7 is installed in the sealing ring groove 402 around the heat dissipation teeth 401 of the L-shaped heat sink 4. The heat dissipation teeth 401 pass through the reserved heat dissipation holes and remain outside the battery PACK, so as to achieve overall sealing and waterproofing.

[0047] The working process of L-shaped radiator 4 is as follows:

[0048] During the charging and discharging process, as well as the heat dissipated from the DC / DC optimizer, the battery module 3 experiences an abnormal temperature rise. The increased temperature of the battery module 3 is transferred to the L-shaped heat sink 4 via the tightly attached side thermal conductive silicone pad 5 and bottom thermal conductive silicone pad 6. The thermal conductive silicone pad can better conduct the battery temperature to the heat dissipation copper pipe 404 and L-shaped heat sink 4, and transfer the internal temperature to the outside of the PACK shell 1 through the heat dissipation teeth 401, thereby achieving the purpose of reducing the overall temperature of the battery module 3.

[0049] The L-shaped heat sink directly dissipates heat from the battery module 3, and after coupling with the battery module 3, it can dissipate heat from the side and bottom of the battery module at the same time, increasing the heat dissipation area and improving heat dissipation efficiency.

[0050] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A L-shaped radiator structure of a household energy storage battery PACK, characterized in that: The application relates to a PACK package shell, a battery module and an L-shaped radiator, at least one group of the L-shaped radiators is arranged in the PACK package shell, the battery module is arranged on each group of the L-shaped radiators, the L-shaped radiator is an L-shaped frame structure composed of a heat dissipation support and a heat dissipation side piece, a heat dissipation copper pipe is embedded on the heat dissipation support and the heat dissipation side piece, a heat dissipation tooth group composed of a plurality of heat dissipation teeth is arranged on the outer side of the heat dissipation side piece, a sealing ring groove is arranged on the heat dissipation side piece at the side of the heat dissipation tooth group, and a cover sealing ring is arranged in the sealing ring groove.

2. The L-shaped heat sink structure of a household energy storage battery PACK according to claim 1, characterized in that: The L-shaped radiator is arranged in two groups in an up-down mode, and a vertical supporting frame is arranged between the two groups of L-shaped radiators.

3. The L-shaped heat sink structure of a household energy storage battery PACK according to claim 1, characterized in that: A bottom heat conduction glue pad is arranged between the heat dissipation support and the battery module, and the bottom heat conduction glue pad is adhered to the heat dissipation support.

4. The L-shaped heat sink structure of a household energy storage battery PACK according to claim 1, characterized in that: A side heat conduction glue pad is arranged between the heat dissipation side piece and the battery module, and the side heat conduction glue pad is adhered to the heat dissipation side piece.

5. The L-shaped heat sink structure of a household energy storage battery PACK according to claim 1, characterized in that: The PACK package shell is composed of a main shell and a shell cover, and the main shell and the shell cover are fixed by screws.

6. The L-shaped heat sink structure of a household energy storage battery PACK according to claim 1, characterized in that: A heat dissipation hole is arranged on the shell wall of the PACK package shell near the heat dissipation tooth side, and the heat dissipation tooth extends to the outside of the PACK package shell through the heat dissipation hole.

7. The L-shaped heat sink structure of a household energy storage battery PACK according to claim 1, characterized in that: A module fixing screw hole is arranged on the heat dissipation support, and the bottom of the battery module is fixed and arranged on the module fixing screw hole by screws.

8. The L-shaped heat sink structure of a household energy storage battery PACK according to claim 1, characterized in that: A cover screw hole is arranged on the heat dissipation side piece, and the cover is fixed and arranged on the cover screw hole by screws.

9. The L-shaped heat sink structure of a household energy storage battery PACK according to claim 1, characterized in that: The L-shaped radiator is arranged in two groups in a left-right symmetrical mode.

10. The L-shaped heat sink structure of a household energy storage battery PACK according to claim 1, characterized in that: The L-shaped radiator is integrally formed.

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