Liquid-cooled battery cell module bracket for battery pack

Abstract

The utility model relates to the technical field of battery packs, in particular to a liquid cooling battery cell module support for a battery pack, which comprises a liquid cooling bottom plate, the liquid cooling bottom plate comprises a frame mounting position and a pair of extension plates positioned on the same side of the frame mounting position, and liquid cooling interfaces are respectively arranged on the extension plates; the frame body mounting position is provided with the battery cell module frame body, and the battery cell module frame body comprises a left end plate and a right end plate which are symmetrically arranged on the left side and the right side, and a front side beam plate and a rear side beam plate which are symmetrically arranged between the left end plate and the right end plate; a battery cell module bottom ventilation groove is formed between the front side beam plate and the liquid cooling bottom plate as well as between the rear side beam plate and the liquid cooling bottom plate; and an inner frame of the battery cell module frame body forms a battery cell module mounting cavity for mounting and fixing the battery cell module. The battery cell module support is simple in structure and easy to assemble or disassemble, and the battery cell module can be stably fixed and cooled.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack technical field especially relates to a liquid cooling electric core module support for battery pack. BACKGROUND

[0002] At present, new energy vehicles are widely concerned by the society due to their excellent environmental protection performance, and the requirements for new energy vehicles are also increasing, as a kind of new energy vehicles, electric vehicles are also developing towards high safety, high energy ratio and light weight. The main factor determining the driving range of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different vehicle models to meet the driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple electric core modules, that is, multiple electric core modules are stacked in the same box, and then the electric core modules are connected. The core electric core module is generally configured with a corresponding number of electric cores according to the size of the required output voltage, and then all the electric cores are connected for voltage output. The electric core module releases a large amount of heat during operation, if not effectively cooled, it will affect the service life of the electric core module, and even cause safety accidents due to high temperature.

[0004] Most of the current electric vehicle battery packs are equipped with thermal management systems, which are mainly passive thermal management and active thermal management. Passive thermal management means using natural cooling of the battery pack. Active thermal management mainly includes air cooling, liquid cooling and phase change material cooling. The actual commonly used is air cooling and water cooling system. Air cooling is not ideal in temperature uniformity. The water cooling pipe of the general water cooling system has high processing technology requirement and high cost. The wall of the water cooling pipe is thin. There is a risk of water leakage and pipe rupture when the battery pack vibrates violently. And there is a risk of rupture when the vehicle is in collision.

[0005] In addition, the traditional method for stacking each electric core to form an electric core module is to use a steel band to surround and fix, or to provide an independent box for the electric core module to press and package the electric core module. However, this method for fixing the electric core module not only has a complex structure and is cumbersome to operate, but also uses a box to isolate the electric core module from the outside, which further cannot dissipate heat, and has great hidden dangers in long-term use.

[0006] Therefore, a new technical solution is needed to solve the above technical problems. Utility model content

[0007] The utility model discloses a purpose at overcoming above-mentioned prior art's problem, provide a kind of for battery pack's liquid cooling electric core module support, for solving the technical problem that traditional technology needs external occupation battery pack space in heat dissipation, cut poor heat dissipation effect, and it is not easy to dissipate heat by using steel band binding operation cumbersome and adopting box body package, further influence electric core module life, and there is security influence.

[0008] The above-mentioned purpose is realized by the following technical solutions:

[0009] A kind of for battery pack's liquid cooling electric core module support, including liquid cooling bottom plate, the liquid cooling bottom plate includes frame body installation site, and a pair of extension plate is located the same side of the frame body installation site, liquid cooling interface is respectively provided on the extension plate;The frame body installation site is provided with the electric core module frame body, the electric core module frame body includes left end plate and right end plate, which are symmetrically arranged on left and right sides, and front side beam plate and rear side beam plate, which are symmetrically arranged between the left end plate and the right end plate, the front side beam plate and the rear side beam plate form electric core module bottom air exchange groove with the liquid cooling bottom plate;The inner frame of the electric core module frame body constitutes electric core module mounting cavity, for the installation and fixation of electric core module.

[0010] Further, screw rod through holes are respectively formed in the left end plate and the right end plate in a longitudinal direction, and screw rod connecting holes corresponding to the screw rod through holes are provided on the liquid cooling bottom plate, and screw rod pipes with nuts are rotatably connected to the screw rod connecting holes after penetrating the screw rod through holes.

[0011] Further, the screw rod through holes include side screw rod through holes symmetrically arranged at both ends of the left end plate and the right end plate, and middle screw rod through holes arranged at middle positions of the left end plate and the right end plate; the screw rod connecting holes include side screw rod connecting holes corresponding to the side screw rod through holes, and middle screw rod connecting holes corresponding to the middle screw rod through holes.

[0012] Further, a battery terminal clamping position is further formed at the top of the left end plate and the right end plate corresponding to the side screw rod through holes and the middle screw rod through holes, and a battery terminal is clamped on the battery terminal clamping position.

[0013] Further, the front side beam plate includes first front side beam plate and second front side beam plate arranged in parallel, and the rear side beam plate includes first rear side beam plate and second rear side beam plate arranged in parallel; electric core module middle air exchange grooves are respectively formed between the first rear side beam plate and the second rear side beam plate, and between the first front side beam plate and the second front side beam plate.

[0014] Further, both ends of the front side beam plate and the rear side beam plate are respectively rotatably connected to the left end plate and the right end plate by beam plate screws.

[0015] Further, a mounting cavity partition plate is arranged between the left end plate and the right end plate, and the mounting cavity partition plate separates the battery cell module mounting cavity into first and second independent battery cell module mounting cavities.

[0016] Further, the mounting cavity partition plate is arranged at the middle axis position of the left end plate and the right end plate, and is screwed with the left end plate and the right end plate through partition plate screws at both ends.

[0017] Further, the bottom of the mounting cavity partition plate is in contact with the liquid cooling bottom plate.

[0018] Further, the liquid cooling bottom plate and the battery cell module frame body are made of aluminum alloy material. Beneficial effects

[0019] The liquid-cooled battery cell module support for the battery pack provided by the utility model realizes heat absorption and heat dissipation of the bottom of the battery cell module through the liquid cooling bottom plate, realizes the limiting and fixing of the battery cell module through the battery cell module frame body, and realizes the bottom heat dissipation of the battery cell module through the battery cell module bottom air exchange groove between the battery cell module and the liquid cooling bottom plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of the liquid-cooled battery cell module support for the battery pack;

[0021] Figure 2 It is an explosion view of the liquid-cooled battery cell module support for the battery pack;

[0022] Figure 3 It is a sectional view of the liquid-cooled battery cell module support for the battery pack.

[0023] Illustration mark:

[0024] 1-liquid cooling bottom plate, 101-frame body mounting position, 102-extension plate, 103-liquid cooling interface;

[0025] 2-battery cell module frame body, 201-left end plate, 202-right end plate, 203-front side beam plate, 204-rear side beam plate, 205-battery cell terminal clamping position, 206-screw rod through hole, 207-screw rod connecting hole, 208-screw rod, 209-side screw rod through hole, 210-middle screw rod through hole, 211-side screw rod connecting hole, 212-, 213-first front side beam plate, 214-second front side beam plate, 215-first rear side beam plate, 216-second rear side beam plate;

[0026] 3-battery cell module bottom air exchange groove;

[0027] 4 - battery cell module installation cavity, 401 - first battery cell module installation cavity, 402 - second battery cell module installation cavity;

[0028] 5 - battery cell terminal;

[0029] 6 - beam plate screw;

[0030] 7 - installation cavity partition plate;

[0031] 8 - partition plate screw;

[0032] 9 - battery cell module middle air exchange groove. DETAILED DESCRIPTION

[0033] The utility model will be further explained in detail below according to the drawings and examples. The described example is only a part of the utility model example, and is not all examples. Based on the example in the utility model, all other examples obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0034] As shown in Figure 1 and Figure 2 The utility model provides a liquid cooling battery cell module support for battery pack, including liquid cooling bottom plate 1, the liquid cooling bottom plate 1 includes frame body installation site 101 and the pair of extension plate 102 on the same side of frame body installation site 101, the extension plate 102 is provided with liquid cooling interface 103 respectively, the inside of liquid bottom plate 1 in the embodiment is provided with the liquid cooling channel for the flow of cooling liquid, the liquid cooling channel includes two connecting ports, is connected with 2 liquid cooling interfaces 103 on 2 extension plates 102 respectively, and one liquid cooling interface 103 is used for connecting cooling liquid inlet pipe, and the other liquid cooling interface 103 is used for connecting cooling liquid outlet pipe, under the action of external cooling liquid circulating feed pump, liquid cooling circulation is formed in the inside of liquid cooling plate, and then can heat dissipation for the battery cell module placed on its surface, the frame body installation site 101 is provided with battery cell module frame body 2, and the battery cell module frame body 2 includes left end plate 201 and right end plate 202 that are symmetrically arranged on the left and right sides, and front side beam plate 203 and rear side beam plate 204 that are symmetrically arranged between left end plate 201 and right end plate 202, and battery cell module bottom air exchange groove 3 is formed between front side beam plate 203 and rear side beam plate 204 and liquid cooling bottom plate 1, and the inner frame of battery cell module frame body 2 constitutes battery cell module installation cavity 4, and is used for the installation and fixation of battery cell module.

[0035] The rectangular battery cell module frame body 2 formed by the left end plate 201, the right end plate 202, the front side beam plate 203 and the rear side beam plate 204 corresponds to the frame mounting position 101 arranged on the surface of the liquid cooling bottom plate 1. By using this structure, the battery cell module installation cavity can be accurately limited in the heat dissipation area of the liquid cooling bottom plate 1, thereby providing good heat dissipation and cooling for the battery cell module in subsequent work.

[0036] In addition, the front side beam plate 203 and the rear side beam plate 204 are arranged not to be in contact with the liquid cooling bottom plate 1 and form the battery cell module bottom air exchange groove 3, which can better facilitate the gas circulation of the bottom of the battery cell module and further promote heat dissipation.

[0037] Both of the two liquid cooling interfaces are arranged on the same side of the liquid cooling bottom plate 1, which facilitates the connection of the pipeline and reduces the complicated installation and arrangement of the pipeline in the battery pack box.

[0038] In the embodiment, the liquid cooling bottom plate 1 and the battery cell module frame body 2 are both made of aluminum alloy material, which not only has the advantages of light weight, high hardness and corrosion resistance, but also is beneficial to heat conduction and ultimately heat dissipation and cooling through the liquid cooling bottom plate.

[0039] As shown in Figures 1 to 3 As the mounting mode of the battery cell module frame body 2 and the liquid cooling bottom plate 1 in the embodiment, a longitudinally arranged screw through hole 206 is formed on each of the left end plate 201 and the right end plate 202, and a screw connecting hole 207 corresponding to the screw through hole 206 is arranged on the liquid cooling bottom plate 1. A screw 208 with a nut is inserted through the screw through hole 206 and screwed with the screw connecting hole 207, so as to stably fix the left end plate 201 and the right end plate 202 on the surface of the liquid cooling bottom plate 1.

[0040] Specifically, the screw through hole 206 includes a side screw through hole 209 arranged symmetrically at the two ends of the left end plate 201 and the right end plate 202, and a middle screw through hole 210 arranged at the middle position of the left end plate 201 and the right end plate 202.

[0041] The screw connecting hole 207 includes a side screw connecting hole 211 corresponding to the side screw through hole 209, and a middle screw connecting hole 212 corresponding to the middle screw through hole 210.

[0042] By using the above hole positions, the left end plate 201 and the right end plate 202 can be firmly connected with the liquid cooling bottom plate 1, avoiding the problem of end plate loosening caused by long-term use, and ensuring the stable operation of the subsequent battery cell module.

[0043] As shown in Figure 1As shown, in order to facilitate the subsequent electrical connection between the cell module and the outside, the top of the left end plate 201 and the right end plate 202 corresponding to the side screw hole 209 and the middle screw hole 210 is also provided with a cell terminal clamping portion 205, the cell terminal clamping portion 205 is clamped with a cell terminal 5, the cell terminal 5 is used for the conductive wiring of the cell module, and the electrical connection between the cell module and the external electrical connection component is facilitated.

[0044] As shown, Figure 1 In the embodiment, the front side beam plate 203 includes a first front side beam plate 213 and a second front side beam plate 214 arranged in parallel, and the rear side beam plate 204 includes a first rear side beam plate 215 and a second rear side beam plate 216 arranged in parallel; the first rear side beam plate 215 and the second rear side beam plate 216, and the first front side beam plate 213 and the second front side beam plate 214 respectively form a cell module middle air exchange groove 9.

[0045] Through the above structure, the side edge of the cell module installed in the cell module installation cavity 4 can be limited and blocked, and the heat dissipation is not affected; since the cell module middle air exchange groove 9 corresponds to the middle position of the side edge of the cell module, the position can be ventilated, and the heat dissipation efficiency is improved.

[0046] The two ends of the front side beam plate 203 and the rear side beam plate 204 are respectively screwed with the left end plate 201 and the right end plate 202 through beam plate screws 6.

[0047] As an optimization of the scheme, the embodiment further provides an installation cavity partition plate 7 between the left end plate 201 and the right end plate 202, the installation cavity partition plate 7 divides the cell module installation cavity 4 into a first cell module installation cavity 401 and a second cell module installation cavity 402 which are independent of each other. Two cell modules can be respectively installed in the first cell module installation cavity 401 and the second cell module installation cavity 402, and horizontal stacking of two cell modules can be realized.

[0048] The installation cavity partition plate 7 is arranged at the middle axis position of the left end plate 201 and the right end plate 202, and the two ends are respectively screwed with the left end plate 201 and the right end plate 202 through partition plate screws 8.

[0049] It should be noted that the bottom of the installation cavity partition plate 7 is in contact with the liquid cooling bottom plate 1, and the complete separation before the cell installation can be realized, and the cell modules located in the first cell module installation cavity 401 and the second cell module installation cavity 402 can work complementarily without interference.

[0050] The above merely illustrates the implementation modes of the present application and is not used to limit the present application, and for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A liquid-cooled cell module carrier for a battery pack, comprising: The utility model provides a liquid cooling bottom plate (1) comprising a frame mounting position (101) and a pair of extension plates (102) on the same side of the frame mounting position (101), wherein the extension plates (102) are respectively provided with liquid cooling interfaces (103); an electric core module frame (2) is arranged on the frame mounting position (101), the electric core module frame (2) comprises left and right side symmetrically arranged left end plates (201) and right end plates (202), and front side beam plates (203) and rear side beam plates (204) symmetrically arranged between the left end plates (201) and the right end plates (202), and the front side beam plates (203) and the rear side beam plates (204) form electric core module bottom air exchange grooves (3) with the liquid cooling bottom plate (1); the inner frame of the electric core module frame (2) constitutes an electric core module mounting cavity (4) for mounting and fixing the electric core module.

2. The liquid-cooled cell module carrier for a battery pack of claim 1, wherein, Screw rod through holes (206) are respectively formed in the left end plates (201) and the right end plates (202) in the longitudinal direction, and screw rod connecting holes (207) corresponding to the screw rod through holes (206) are arranged on the liquid cooling bottom plate (1), and screw rods (208) with nuts are connected with the screw rod connecting holes (207) after penetrating through the screw rod through holes (206).

3. The liquid-cooled cell module carrier for a battery pack of claim 2, wherein, The screw rod through holes (206) comprise side screw rod through holes (209) symmetrically arranged at the two ends of the left end plates (201) and the right end plates (202), and middle screw rod through holes (210) arranged at the middle positions of the left end plates (201) and the right end plates (202). The screw rod connecting holes (207) comprise side screw rod connecting holes (211) corresponding to the side screw rod through holes (209), and middle screw rod connecting holes (212) corresponding to the middle screw rod through holes (210).

4. The liquid-cooled cell module carrier for a battery pack of claim 3, wherein, Electric core terminal clamping positions (205) are further formed at the top of the left end plates (201) and the right end plates (202) corresponding to the side screw rod through holes (209) and the middle screw rod through holes (210), and electric core terminals (5) are clamped on the electric core terminal clamping positions (205).

5. The liquid-cooled cell module carrier for a battery pack of claim 1, wherein, The front side beam plates (203) comprise first front side beam plates (213) and second front side beam plates (214) arranged in parallel, the rear side beam plates (204) comprise first rear side beam plates (215) and second rear side beam plates (216) arranged in parallel, and electric core module middle air exchange grooves (9) are respectively formed between the first rear side beam plates (215) and the second rear side beam plates (216) and between the first front side beam plates (213) and the second front side beam plates (214).

6. The liquid-cooled cell module carrier for a battery pack of claim 1, wherein, The two ends of the front side beam plates (203) and the rear side beam plates (204) are respectively connected with the left end plates (201) and the right end plates (202) through beam plate screws (6).

7. The liquid-cooled cell module carrier for a battery pack of claim 1, wherein, A mounting cavity partition plate (7) is further arranged between the left end plate (201) and the right end plate (202), and the mounting cavity partition plate (7) separates the battery cell module mounting cavity (4) into the first battery cell module mounting cavity (401) and the second battery cell module mounting cavity (402) which are independent of each other.

8. The liquid-cooled cell module carrier for a battery pack of claim 7, wherein, The mounting cavity partition plate (7) is arranged at the middle axis position of the left end plate (201) and the right end plate (202), and is rotatably connected to the left end plate (201) and the right end plate (202) by partition plate screws (8) at two ends.

9. The liquid-cooled cell module carrier for a battery pack of claim 7, wherein, The bottom of the mounting cavity partition plate (7) is in contact with the liquid cooling bottom plate (1).

10. The liquid-cooled cell module carrier for a battery pack of claim 1, wherein, The liquid cooling bottom plate (1) and the battery cell module frame (2) are both made of aluminum alloy.

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